OAMM-VniD-K. 69 



9. Lysiauassa Costae. (Plate X. fig. 11.) B.M. 



Lysinun-ssa C'ost;e, Edw. Ann. des Sri. Nat. t. xx. p. 3G5. pi. 10. f. 17 ; 

 Hist, (hs Cni.it. t. iii. p. L'l. 



TVJiite, Hist, lirit. Crust, p. 1G7. 



S^ence Bate, Brit. Assoc. Report, 1855 j Synopsis Brit, Amph., Ann. 

 Nat. Hist. Feb. 1857. 

 Gammarus o;labor, (Spinula) White, Cat. Brit. Mus. {Crustacea), 1847. 



Eyes rcuifomi, brown, moderately large. Superior antennae wAih. the 

 peduncle a« long as the cephalon ; the flagcllum scarcely as long as 

 the peduncle. Inferior antenna) not longer than the superior ; pe- 

 duncle same length as the superior. Epistome rounded in advance, 

 wedge-shaped. Mandibles long and narrow ; anterior margin near 

 the incisive edge fm-nished with a small projecting tubercle or 

 blunt tooth. Maxillipeds \ni\\ a short dactylos ; the squamiform 

 process not denticulated, but slightly crenulated. First pair of 

 gnathopoda having the propodos scarcely longer than the carpus. 

 Second pair of gnathopoda with the propodos much shorter than the 

 caipus. Tliii'd, foiu-th, and fifth pairs of porciopoda with the pos- 

 terior margin of the bases crenulated, each depression marked with 

 a minute haii-. Rami of the posterior pair- of pleopoda not so long 

 as the peduncle. Telson simple. 



Length of British specimen ^ijths of an inch. 



Holboll has taken it at Sukkertopper, Greenland, in forty fathoms. 

 I have di-edged it at Plymouth ; Mi'. Webster has also dredged it at 

 Tenby. The Marquis of Spinola presented specimens to the British 

 Museum, from the shores of Italy ; and Edwards described the type, 

 which is preserved in the Museum of the Jardin des Plantes, from a 

 specimen taken at Naples. 



10. Lysianassa Audouimana. (Plate XI. fig. 1.) B.M. 



Lysiana-ssa Audoiiiuiana, Spence Bate, Brit. Assoc. Rep. 1855 ; Si/noj)s. 

 Brit. Amph., Aiui. Nat. Hist. Feb. 1857. 

 A. White, Hist. Brit. Crust, p. 168. 



Cephalon short. Pereion long, arcuate. Eyes large, oblong, broader 

 below than above ; white, with black spots. Superior antenna) 

 ha\-ing the flagcllum shorter than the peduncle. Inferior antenna) 

 having the peduncle not so long as the peduncle of the superior ; 

 flagellura rudimentary. First pair of gnathopoda having the dac- 

 tylos slightly cxirved, furnished below with two minute short teeth 

 or spines. Second pair of gnathopoda ha\-ing the inferior angle 

 of the palm advanced, so as to be almost chelate, fringed interiorly 

 and superiorly with long simple hairs. Pereiopoda robust, sub- 

 equal. Antepenultimate pair of pleopoda ha\-ing the rami styli- 

 form, slightly curved, clean : penultimate pair having the rami 

 like the preceding, but minutely serrated upon the posterior mar- 



