Squilla nepa, Latreille.
Miers, “On the Squillidæ,” Annals and Mag. Nat. Hist., ser. 5, vol. v., p. 25 (1880).
Brooks, “Report on the ‘Challenger’ Stomatopoda”, p. 25 (1886).
The further synonymy is given by Miers in the paper quoted.
Hab. Indo-Pacific region. Recorded from New Zealand by Heller, but New Zealand habitat doubtful.
Squilla armata, Milne-Edwards.
Miers, l.c., p. 26 (1880).
Kirk, Trans. N.Z. Inst., xi., p. 401 (1878).
As no description of this species has as yet appeared in any New Zealand publication, I transcribe the following from Miers's paper “On the Squillidæ:”—”
“The carapace is narrowed anteriorly, with the cervical suture very faintly defined in its posterior portion, and the lateral longitudinal carinæ obliterated, except on the postero-lateral lobes; the spine at the antero-lateral angles is small but distinct. The rostral plate is somewhat elongated and narrowed distally, with a very slight median elevation. The lateral spines of the antennulary segment are prominent and curved forward; and in front of these are two smaller spines on the ocular segment. The lateral processes of the first exposed thoracic segment are narrow, straight, and acute; those of the two following segments are broader and rounded laterally, with a spinule at their postero-lateral angles. There is a small median carinule or tubercle on the 3rd to 5th post-abdominal segments; on the 4th and 5th segments the lateral carinæ, and on the 6th segment all the carinæ end in spinules; the terminal segment is armed with a few tubercles near its base, with a longitudinal median carina, on either side of which is a lateral longitudinal series of very small tubercles; there is a rather deep median fissure between the submedian marginal spines, but no denticles; between these and the first lateral marginal spines there are on each side ten or eleven very small denticles or spinules. The distal prolongation of the base of the uropoda ends in two very unequal spines, the inner of which bears a small tooth on its outer margin. Length of the larger individual 5 ⅙in.”—[Miers.]
Hab. Chili; Auckland Islands (Miers). Recorded from Wellington by Mr. T. W. Kirk. There is a specimen (much damaged) in the Dunedin Museum labelled “Dunedin.” Mr.
Kirk informs me that the “Mantis shrimps,” dredged in Wellington Harbour, and exhibited by Mr. McIntyre at the meeting of the Wellington Philosophical Society on 2nd July 1890,* also belong to this species.
Mr. Kirk very kindly lent me a fine spirit specimen (female) and two dried specimens (males) for examination. The female is 4 ¼in. in length; the males are smaller. The “small median carinule or tubercle on the 3rd to 5th post-abdominal segments” is but slightly represented on the large female specimen, and is barely distinguishable in the smaller male specimens, and the “lateral longitudinal series of very small tubercles” on the sides of the median carina of the telson are also absent in all specimens; but in all other respects the specimens agree very closely with Miers's description. As the male specimens are dried, I have not been able to examine the structure of the terminal joint of the 1st abdominal appendage in this species.
[Footnote] * Monthly Review, ii., p. 427.