AMPELISCA GAIMARDU. 



127 



1 MPIIIPODA. 



\.lT.LT01iIA. 



A MPELISCIDES. 



- 





AMPELISCA GAIMARDI1. 



Specific character. Posterior margin of the third segment of the pleou 

 plain. Superior antennae one-third the length of the animal. Inferior an- 

 tennte very slender, two -thirds the length of the animal. 



Length, f inch. 



Ampelisca Gaimardii. KROYEE, Voyage en Scand. Crust, pi. xxiii. fig. 1. 



SPENCE BATE, Cat. Auiph. Brit. Mus. p. 91, pi. 



xv. fig. 1. 

 Araneops diadema. A. COSTA, Rend, del Accad. Sc. di Nap. 1853, p. 



171, Tav. i. fig. 1. 

 Tetromatus typicus. SPENCE BATE, Brit. Assoc. Rep. 1855, p. 58. Synop. 



Ann. Nat. Hist. ser. 2, xix. p. 139. WHITE, Hist. 



Brit. Crust, p. 171, pi. x. fig. 4. 



THE anterior half of the animal is much more com- 

 pressed than the posterior, and narrowed to an angle 

 upon the dorsal surface, the angle increasing anteriorly 

 to the extremity of the head. The eyes consist of simple 



