118 Memoirs of the Indian Museum. [Vou. IV, 
5. Lysiosquilla spinosa (Wood-Mason). 
Plate VIII, fig. 94. 
Coronts tricarinate, Gray MS., White, List. Crust. Brit. Mus., p. 85 (sine desc.). 
Coronis spinosa, Wood-Mason, Proc. As. Soc. Bengal, p. 232; reprinted in Ann. Mag. Nat. 
Hist. (4) XVII, p. 263 (1876). 
1878. Squilla indefensa, Kirk, Ann. Mag. Nat. Hist. (5), II, p. 466. 
79. Squilla indefensa, Kirk, Trans. N. Zealand Inst., XI; p. 394 (text-fig.) and p. 4or. 
79. Squilla laevis, Hutton (non Hess), Trans. N. Zealand Inst., XI., p. 340. 
1880. Lysiosquilla spinosa, Miers, Ann. Mag. Nat. Hist. (5), V, pp. 12, 125, pl. 1, figs. 10-12. 
1882. Sgwilla tridentata, Thomson, Trans. N. Zealand Inst., XIV, p. 230. 
1886. Sguilla indefensa, Fihol, Miss. de Vile Campbell, III, 2e, p. 436, pl. lv, fig. 3.! 
1886. Squilla laevis, Filhol, ibid. p. 491. 
1891. Lystosquilla spinosa, Chilton, Trans. N. Zealand Inst., XXIII, p. 61, pl. x, figs. 1-3. 
1894. Lystosquilla spinosa, Bigelow, Proc. U.S. Nat. Mus., XVII, p. 503. 
1894. Lysiosquilla (%) tridentata, Bigelow, ibid. p. 503. 
1895. Lysiosquilla spinosa, Wood-Mason, Figs. and Desc. of nine Squillidae, p. 1, pl. i, figs.1-3. 
gor. Lystosquilla spinosa, Lanchester, Proc. Zool. Soc., II, p. 554. 
1909. Lystosquilla spinosa, Chilton, in Subantarctic Is. of N. Zealand, II, p. 615. 
1910. Lysiosguilla spinosa, Chilton, Trans. N. Zealand Inst., XLIII, p. 139. 
The carapace and abdomen are smooth and polished dorsally and the former is con- 
siderably wider posteriorly than anteriorly. The gastric grooves are distinct through- 
out their course and the cervical is represented by a short transverse depression on 
either side as in L. maculata. The antero- and postero-lateral angles are broadly 
rounded and the posterior margin is deeply concave. ‘The rostrum is perfectly smooth 
dorsally ; it is a little broader than long and its strongly convex lateral margins con- 
verge to a small but acute apex. 
The corneal portion of the eyes is a trifle wider than the stalk, not bilobed, and the 
corneal and peduncular axes are slightly oblique with regard to one another. The 
anterior margin of the ophthalmic somite is truncate but, in dorsal view, is entirely 
concealed by the rostrum. The dorsal processes of the somite are for the same reason 
quite invisible. The antennular peduncle is less than one and a half times the 
length of the carapace, excluding the rostrum. The dorsal processes of the antennular 
somite are acute and reach to the base of the eyestalks. . The mandibular palp is com- 
posed of three segments. 
The outer inferior margin of the merus of the raptorial claw is subrectangular, but 
rounded distally. The dorsal edge of the carpus is not carinate but its upper margin 
ends in a sharp spine overhanging the propodal articulation. ‘There are three movable 
spines at the base of the pectinate edge of the propodus. The dactylus is sinuous ex- 
ternally with a very small outstanding proximal lobe. It bears from nine to fourteen 
teeth * (including the terminal one) which increase regularly in size from the base to the 
apex. 
' A bad reproduction of Kirk’s rough text-figure. 
* Of the two specimens examined, the type has ten spines, while the other has ten on one side and 
eleven on the other. The type of Thomson’s S. tridentata has only four teeth on the raptorial dactylus; 
but the specimen is exceedingly small; only °75 inches in length. 
