the epistome; the internal footstalk gradually acuminated, the third joint internally palpigerous; anterior legs large, equal, the hand inflated, those of the male larger than those of the female; the other legs shorter than the first pair, diminishing gradually in length, terminating in a slightly curved, rather strong claw; abdomen seven-jointed, but with several of the middle joints confluent; that of the male narrow; of the female very broad, the last joint very small, abruptly narrower than the preceding; carapace rhomboidal, with the angles more or less truncated or rounded; front produced, elevated; eyes very small; orbits with two small fissures on the superior margin.

Ebalia tumefacta. Bryer's Nut Crab.

Cancer tumefacta, Mont., Trans. Linn. Soc. IX., p. 86, T. II., f. 3.

Ebalia bryerii, Leach, Mal. Podoph. Brit., T. XXV., f 12–13.

Carapace slightly and minutely granulated; lateral margin entire, somewhat revolute at the angles; two tubercles on the cardiac region, and one on each of the branchial in the male; these parts very tumid in the female; abdomen in the male with the third to the fifth joints united; in the female the fourth to the sixth; arm not more than twice as long as it is broad. (Bell's Brit. Crust., p. 145.)

Hub: Cook Strait. A single female, and the right anterior leg of another specimen.

Elamena producta, sp. nov. New Zealand Spider crab.

Carapace flat, broader than long, margin with two teeth, which, however, vary much in size; rostrum very prominent; anterior legs in male large and equal, hand and wrist much swollen; fingers curved and armed with hairs along their inner margins; in the female these legs are slight, and the fingers almost straight; succeeding legs very flat, the anterior margin

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of the first joint produced so as to form a very prominent point, almost a spine; claws half the length of preceding joint; whole animal destitute of hair, except on the fingers. Length, ⅝ in.; breadth, 4/8 in. First three pairs of ambulatory legs very long, more than twice the length of the carapace.

Hab: Wellington.

Petrolisthes elongatus, Miers.

In the ‘Catalogue of New Zealand Crustacea,’ p. 60, this species is said to be of a “reddish-yellow” colour. The specimens from which the description was drawn up must have been preserved in spirit. This change of colour is usual in specimens so treated. The following is taken from living examples.

Above dark blue, greenish-blue, or sometimes even black. Below green, getting much darker towards the posterior margin of the anterior legs, anterior face of wrist a bright red, mobile finger and antennæ deep brown.

Porcellana rupicola, Stimpson.

A single specimen of this species was recently obtained by myself at Lyall Bay, living apparently upon terms of intimacy with a large family of Petrolisthes elongatus. Upon a comparison with the foreign Crustacea in the Colonial Museum, I find it to agree in every particular with a specimen contained in the collection lately received from Prof. Button of the University of California, and labelled as above.

Unfortunately I have not been able to obtain the description either of this or the next species, but there can be no doubt respecting their identity, as those forwarded by Prof. Button are duplicates of the U.S. Exploring Expedition's collection.

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This species may be easily distinguished from Petrolisthes elongatus by its having the posterior margin of the wrist produced, so as to form one strong tooth, by its more drooping front, and by having the lateral margins obtuse instead of thin and sharp. Length, ⅝ in.; breadth, 4/8 in.

Xantho spino-tuberculata, Lockington.

A fine pair of this beautiful little crab was procured at Porirua Harbour, in January of last year, and although only about half the size of the Californian specimen, there can be no mistaking their identity.

The carapace is much broader than long, the front armed with spinous tubercles; regions well defined; anterior legs strong, equal, the outer and