Mr. E. J. Miers on the Squillidas. 21 



**** Dactyli of the raptorial limbs armed toith six spines. 



Squilla costata. 



Squilla costata, De Haan, Faun. Japon. Crust, p. 223, pi. li. fig. 5 

 (1849). 



This species is described by De Haan as having the front 

 truncated at apex. Sides of the thoracic segments bispinose ; 

 spines of the same form as in 8. nepa (S. orator ia, De H.). 

 In the median region of the thorax and postabdomen there are 

 five straight, approximated, continuous, equal carime ; between 

 these and the three lateral carinas the postabdominal surface 

 is roughened with short curved carinules or raised tubercles ; 

 in the fifth segment eight, and in the sixth segment six of the 

 carinas terminate in a spine ; in the middle of the posterior 

 segment there are also five carinas, of which the inner is less 

 elevated than the lateral ones, and the outer are short and 

 oblique. Terminal segment with a continuous curved carina 

 on each side between the median ridge and lateral margin, 

 with five oblique carinules, which become obsolete at base, 

 and with the spines produced into carinas. Dactyli of the 

 raptorial limbs six-spined. 



Hah. Japan. 



Of this small species De Haan had several examples. I 

 have seen no specimens. It evidently presents many affini- 

 ties with S. multtcarinata, but differs not only in the six- 

 spined dactyli of the raptorial limbs, but also, it would appear, 

 by the carapace not being marked with cariniclce or ridges. 



Squilla mantis. (PI. II. fig. 11.) 



Squille mante, De Geer, Mem. pour servir a l'hist. des Insectes, vii. 



p. 533, pi. xxxiv. fig. 1 (1778). 

 Squilla mantis, Latr. Hist. Nat. Crust, vi. p. 278, pi. lv. fig. 1 (1802) ; 



Encycl. Meth. Hist. Nat. x. p. 471 (1825); Atlas, pi. ccxcv. figs. 1, 7, 



and pi. cccxxiv. ; Cuv. Regne Anim. iv. p. 108 (1829) ; Lam. Hist. 



Anim. sans Vert. v. p. 187 ( 1818) ; Risso, Hist. Nat. Eur. merid. v. 



p. 85 (1826) ; M.-Edw. Hist. Nat. Crust, ii. p. 520 (1837) ; Crust. 



in Cuv. R. A. (ed. 3), Atlas, pi. lv. fig. 1 ; White, List Crust. Brit. 



Mus. p. 83 (1847) ; Lucas, Anim. artic. in Expl. Algerie, i. p. 50 



(1849); Bell, Brit. Crust, p. 351 (1851); Johnson, Ann. & Mag. 



Nat. Hist. iii. p. 56 (1859) ; Heller, Crust, siidl. Europa, p. 306, 



pi. x. figs. 15-19 (1863); B. Capello, J. Acad. Sci. Lisboa, p. 80 



(1877). 

 ? Cancer (Mantis) digitalis, Herbst, Naturg. Krabben, &c. p. 93, 



pi. xxxiii. fig. 1 (1796). 



Carapace narrowed anteriorly, with the cervical suture 

 strongly defined, with a longitudinal median and two lateral 

 carinas, the inner lateral carina being interrupted for a con- 



