12 Mr. E. J. Miers on the Squillidse. 



Lysiosquilla spinosa. (PI. I. figs. 10-12.) 



Coronis spinosa, Wood-Mason, Proc. Asiatic Soc. Bengal, p. 232 



(1875). 

 ? Squitta indefensa, Kirk, Ann. & Mag. Nat. Hist. (ser. 5) ii. p. 46(5 



(1878). 



Is described by Mr. Wood-Mason as having three spines 

 projecting from the telson, just above the level of the marginal 

 ones, of which there are three pairs • the median pair movable 

 and smaller than the rest, and with the interval between them 

 finely serrated (five or six teeth on each side of the middle 

 line), between these and each lateral pair two spinules, be- 

 tween the teeth of each lateral pair one spinule ; dactyli of 

 raptorial limbs 10-toothed. 



It inhabits the Andamans and the seas of New Zealand. 



I refer the Squilla indefensa of Kirk, from Chatham Island 

 and Kapiti, to this species, because his short description agrees 

 with Mr. Wood-Mason's diagnosis ; but more details are 

 needed to render the identification certain. Kirk describes 

 the rostral plate as semioval and acute at its distal extremity, 

 and the carapace as retracted in front, expanded and rounded 

 behind, smooth, with the antero-lateral angles rounded and 

 slightly produced forwards. 



It is very probable that the Lysiosquilla tricarinata [Coronis 

 tricarinata, Gray, ined., White, List Cr. Brit. Mus. p. 85, 

 1847) is identical with this species. The unique example, 

 a male, was collected in the Antarctic expedition under 

 Captain Sir J. C. Ross ; and the locality has not been pre- 

 served. Kirk's description applies very well to this specimen ; 

 but no mention is made in it of the spinules between the mar- 

 ginal spines of the terminal postabdominal segment. There 

 are in L. tricarinata about a dozen minute spinules between 

 the submedian marginal spines, between the submedian and 

 second marginal spines two or three spinules on each side, 

 and between the second and third marginal spines one, as in 

 C. spinosa ; the dactylus of the raptorial limbs is armed with 

 only nine spines on its inner margin, including the terminal 

 spine. 



Leptosquilla, gen. nov. 



This genus is distinguished from all others of this family 

 by the form of the ophthalmic segment, which is greatly 

 elongated and prolonged beyond the rostrum for more than 

 half its length. The eye-peduncles are very slender, elon- 

 gated, and compressed, not dilated in the middle as in 

 Chloridella, or at the distal end as usual in Squilla. The ap- 

 pendages of the thoracic limbs are almost linear, not dilated. 



