In the interests of students of zoo-geography and local faunas, zoologists ought to protest against this sort of mixture of localities under a title which indicates, if words mean anything, that the contents were collected during an expedition to the Philippine Islands.

However, I have to thank Dr. Bergh for naming and describing these specimens, and for sending me proof-sheets of that part of his valuable “Untersuchungen” that deals with our species. It would have been useful to have reproduced his figures, but I understand from Mr. Hedley that the only figure of an entire animal is reproduced from a sketch of Atagema carinata that I forwarded to Bergh; the remaining figures refer only to differences of internal anatomy—many of them of microscopic detail.

In addition to six species the description of which is given in the translation below, Dr. Bergh named for me five other nudibranchs, of which one is Goniodoris castanea, Alder and Hancock, which is thus shown to have a very wide distribution, as it occurs on the British coast. Of the remainder, two new species of Chromodoris, a new species of Doriopsilla, and one of Aphelodoris were included in those I sent him, but, as I do not know whether he has yet published a description of these new species, I refrain from giving the specific names at present. These four new species and some of the others were obtained during the two trips of the s.s. “Doto” in which Mr. Ayson, Inspector of Fisheries, conducted a series of experimental trawlings in the years 1900 and 1901, when a considerable number of new and rare species of most groups of invertebrata were obtained.

Of the two new species of Chromodoris, one was obtained off the Mahia Peninsula, Hicks Bay, on the east coast of the North Island; the other between Kaipara and New Plymouth, where, too, the Aphelodoris was caught: these were carefully preserved by Mr. Hamilton. The Doriopsilla was dredged from 30 fathoms in Tasman Bay, in 1900, when Mr. G. M. Thomson was superintending the collection of invertebrates.

One of the most interesting of the molluscs described below is Homoiodoris novae-zealandiae, since the only other species of this genus occurs in the Japan Sea. We have several other similar facts of distribution amongst our marine invertebrata. I refer, for example, to the peculiar little enteropneust Dolichoglossus otagoensis, Benham,^* with its grooved proboscis, which is only known in one other species (D. sulcatus, Spengel, from Japan). Again, the polynoid Physalidonotus squamosus, Qtfgs. (or Lepidonotus

The anal papilla is nearly in the centre of the branchial crown. The mantle-flap^* is of nearly the same breadth throughout; its under-surface smooth. The foot is rounded in front, with well-defined marginal groove; the margin is not very narrow; the tail short.

[Remarks (p. 33).] From its coloration this form probably represents a new species; possibly it is identical with one or other of the “species” recently described from the Pacific Ocean.^†

[I confess I do not understand the above remark. If it is merely its coloration that distinguishes it, it seems scarcely probable that that would justify the formation of a new species. I may note that Sir G. Eliot, in his account of the “Nudibranchs of East Africa and Zanzibar,”^‡ suggests that his A. africana may be identical with this species, and A. umia with A. nanntla. It is rather odd that Bergh does not refer to Abraham's paper in the Proc. Zool. Soc. 1877, in which several opisthobranchs from our coasts are described and figured. It is evident that all our nudibranchs require working over carefully, for it seems likely that the littoral forms have received more than one name. It will be seen, later, that in the case of other species there is the same hesitation or doubt as to its novelty or otherwise. Unfortunately, the valuable memoirs that Bergh has been publishing for some years past are very much too expensive for individual workers to purchase, and none of our libraries possess the work.]

A. nannula, Bergh, n. sp. [p. 33], p1. iii., fig. 2.

Of this form Benham has forwarded seven individuals, obtained at Port Chalmers, Otago Harbour. [I collected some dozens of this bright little species when the s.s. “Ringarooma” was in dry dock, after being at moorings for about a year in Deborah Bay, amongst the seaweeds, Bryozoa, sponges, &c., adhering to the bottom of the ship. I collected a considerable number of interesting animals, amongst others the Goniodoris castanea, referred to above.]

[Colour.] During life they are light—orange—coloured. In alcohol the seven individuals agree pretty well in colour, size, and form. They were entirely yellowish-white.

[Dimensions.] The length averages about 18mm., with a breadth up to 14mm., and a height of 3 mm.; the breadth of

the mantle-flap is about 14mm. [sic.: probably a misprint]. The height of the gills is 4.5 mm.; breadth of the foot, 7 mm.

[Externals.] Form as usual. The back is entirely covered with almost hemispherical papillae, not very variable in size, but somewhat smaller at the mantle-edge. The club of the rhino-phore is much foliated, the foliae stiffened in the usual way with long spicules. The branchial region is in all the individuals much everted, and surrounded by the narrow lip of the distended gill-opening (which measures 6 mm. in diameter). The gill is formed of five to seven tripinnate members: the upright anal papilla completes the branchial circle posteriorly. The under-surface of the mantle-edge is smooth; the tentacles appear to be shortly conical; the foot is fairly broad, rounded in front, with a short tail.

[Remarks (p. 34).] This form is undoubtedly an Archidoris, but whether it represents a distinct species must remain for the present undecided.

Archidoris, sp. [p. 34].

The single specimen obtained by Benham at Kaikoura, on the east coast of the South Island, was, in life, pale-orange in colour.

[Colour.] The specimen in alcohol was much hardened, broken, somewhat contracted, and uniformly light-yellowish.

[Dimensions.] Length, 23 mm.; breadth, 16 mm.; height, 10 mm. Breadth of mantle-flap, 3 mm.; of the foot, 13 mm. The height of the rhinophore, 2 mm.; the diameter of the circular branchial aperture is 4 mm.; height of the gill, 3 mm.

The animal was somewhat hard and stiffened; the back fairly smooth, but finely granulated towards the margins; the rhinophores, lying far forward, has its club much foliated. The foot is large; its margin not broad; the tail short.

[Remarks (p. 35).] This form is probably identical with one of the recently described species of the genus.

Homoiodoris, Bergh, 1881.

Hitherto only one species of this genus, H. japonica, has been described, and this from the South Japan Sea.

H. novae-zealandiae, Bergh, n. sp. [p. 35], p1. iii., figs. 3–7.

Of this form five individuals were received from Mr. H. Suter, who collected them at Port Chalmers.

[Dimensions.] The specimens preserved in alcohol had a length varying from 12–20 mm. In the largest individual the breadth of the body is 13 mm.; the height, 7 mm.; the width of the mantle-flap is 3.5 mm.; that of the border of the foot is 3 mm.: the length of foot is 16 mm.; its breadth, 7 mm.;

back and a widish mantle-flap, with tri- or quadri-pinnate gills, small tentacles, and rather stout foot. The oral disc (Lippen-scheibe) is unarmed; the radula has a narrow naked rhachis, and numerous hook-like plates. Within this large family of Dorids it approaches most nearly the genus Archidoris. It shows well the short finger-shaped tentacles and the relatively small number of gills. The penis and vagina are both unarmed. Apparently the only peculiarity about the animal is the dorsal keel, and it-must for the present remain doubtful whether Gray was justified in founding a new genus on this character alone.

Atagema carinata (Q. and G.). Doris carinata, Q. and G., Voy. de 1'Astrolabe, ii., p. 254, pl. 16., figs. 14–16. Atagema carinata, Gray, fig. iv., p. 104. [Bergh figures it] pl. iii., fig. 8–11.]

An individual of this species lies before me, obtained by Dr. Benham from Dusky Sound, at the south-west corner of the South Island. The living animal is pure-white. The sketch made by Benham (fig. 8) is from an individual preserved in formol.

[I exhibited a specimen of this Dorid at a meeting of the Otago Institute in 1898,^* and drew attention to the fact that it was the “D. carinata” of Quoy and Gaimard. Since sending the specimen to Dr. Bergh, I have received from Mr. R. Henry, at Dusky Sound, others of a larger size—viz'., length, 8–9 cm.; breadth, 6–7 cm.; height, 3.3 cm.

The specimen in alcohol is much arched, contracted, and hardened; it had been broken. It is now yellowish-white in colour.

[Dimensions (p. 40).] The length was [in an extended condition] probably 5–6 cm., with a breadth of 4 cm., and a height 2.5 cm. The dorsal keel has at its greatest length a breadth of 5–7 mm.; it is narrower in front and behind, while posteriorly to the protuberance its height is 5 mm. The width of the mantle-flap is at least 12 mm., and its thickness at the base is 7 mm.; the height of the rhinophore-sheath is 4 mm., and of the branchial papilla 4 mm.; the breadth of the foot is 22 mm., and of the margin of the foot 4 mm.

[Externals.] The consistency is leathery; the back is quite finely shagreened. The form is oval, with a somewhat arched back; the mantle-flap broad, and the foot projecting all round. The back carries a great median keel, which commences anteriorly between the rhinophores. It is at first somewhat low and narrow, then becomes thicker, and behind the middle