108 Mr, E. J. MierS'O'n the Squillidse. 



IX.— On the SquillidaB. By Edward J. MiERS, F.L.S., 

 F.Z.S., Assistant in the Zoological Department, British 



Museum. 



[Continued from p. 30.] 



PSEUDOSQUILLA. 



. Squilles trapues, M.-Edwards, Hist. Nat. Cr. ii. p. 525 (1837). 

 Squilke (sect, in.) parallels, De llaan, Faun. Japon. Cr. p. 221 (1849). 

 Pseudosquilla, Guerin (ined.) *, Dana, U.S. Expl. Exp. xiii. Cr. i. p. 615 

 (1852). 



Carapace not longitudinally costate ; cervical suture faintly 

 defined or obsolete posteriorly. Rostral plate reaching to and 

 covering the base of the eye -peduncles. Four posterior 

 thoracic segments not covered by the carapace. The exposed 

 thoracic and postabdominal segments are compactly articu- 

 lated ; and the latter are smooth, not longitudinally costate ; 

 the terminal segment well developed, and bearing at its distal 

 end two mobile spines. Dactylus of the raptorial limbs not 

 dilated at base, unarmed or with few spines on its inner 

 margin. The appendages of the three posterior thoracic limbs 

 are slender and styliforni. 



* Rostrum without a median spine. Antennules usually small and slender. 

 Sasal prolongation of the uropoda ending in two spines. 



Pseudosquilla ciliata. (PI. III. figs. 7, 8.) 



?SquiUa ciliata, Fabr. Ent. Syst. ii. p. 512 (1793), Suppl. p. 417 

 (1798) ; Owen, Zcol. Vov. Blossom, p. 90, pi. xxvii. fig. 5 (1839) ; 

 White, List Crust. Brit. Mus. p. 84 (1847). 



Squilla stylifera, Lam. Hist. An. sans Vert. v. p. 189 (1818); Latreille, 

 Encycl. M.'th. x. p. 472 (1825) ; Guerin, Icon. Crust. R. A.pl.xxiv. 

 fig. 1 ; M.-Edw. Hist. Nat. Crust, ii. p. 52G (1837) ; Gibbes, Proc. 

 Amer. Assoc, p. 200 (1850) ; Hoffmann, Recherches Faune Mada- 

 gascar, Cr. p. 43 (1874). 



Pseudosquilla stylifera, Dana, U.S. Expl. Exp. xiii. Cr. i. p. G22, pi. xli. 

 fig. 4 (1852). 



? Pseudosquilla stylifera, v. Martens, Arcbiv f. Naturg. xxxviii. p. 146 

 (1872). 



Carapace smooth, with the longitudinal sutures straight 

 and continuous from the anterior to the posterior margin, but 

 without the transverse cervical suture ; its posterior margin 

 straight, with the antero-lateral and postero-lateral angles 

 rounded and not produced. Eostral plate nearly of a trans- 



* Eydoux and Souleyet (Voy. Borate, Zool. i. p. 263) say tbat this 

 genus was estabbshed by Guerin to include, besides P. ciliata and P. 

 oculata, two new species, P. cylindrica and leptodaetyla, Guerin ; but I 

 cannot discover any published descriptions by him. 



