84 AMPniroDA norm alia. 



description, in having the hack deeply stained with rose-colour; 

 the eyes hlack, large, reniform, and almost confluent at the top of 

 the head ; and in the posterior pair of pleopoda ha\dng long, ornate, 

 plumose hairs. 

 Length 4 lines. 



Hah. S. Greenland (Holholl). 



10. ICHNOPUS. 



Ichnopus, Costa, Rend. cMla Reale Accad. delle Set. di Napoli, p. 109, 

 1853. 



« Antenna? long and slender ; superior having a secondary append- 

 age. Gnathopoda long, slender, filiform, scarcely prehensile ; 

 first pair cylindrical, terminating in a minute dactylos inferiorly 

 pectinated ; second pair suhmemhranaceous, having the apex of 

 the propodos fimbriated ; dactylos scarcely conspicuous." — Costa. 



I have seen no specimen of this genus ; but its separation from 

 Lysianassa appears to be doubtful. Costa considers it a link be- 

 tween Callisoma and Alibrotus. 



1. Ichnopus Taurus. 



Ichnopus Taurus, Costa, Rend, delta Reale Accad. delle Sci. di Napoli, 

 p. 172, 1853. 



*< Superior antennae a little shorter than half the body ; flagellum 

 four times as long as the peduncle. Inferior antennae longer than 

 the superior ; peduncle twice as long as the peduncle of the su- 

 perior. Bases of each of the three posterior pairs of pereiopoda 

 serrated. 



" Length 5 lines. 



" Hah. Coast of Naples." — Costa. 



b. Second pair of gnathopoda robust and more or less ckeliform, 



and the first feehle. 



11. CALLISOMA. 



Callisoma, Costa, Cat. Ital. Crust, by the Rev. Mr. Hope, 1851 *. 

 Scopelocheirus, Spence Bate, Rrit. Assoc. Rqwrt, 1855 j Synopsis Brit, 

 Amph., Ami. Nat. Hist. Feb. 1857. 

 *■ . White, Hist. Brit. Crust, p. 168. 



Superior antennae short, pyriform, and furnished with a secondary 

 appendage. First pair of gnathopoda having the dactylos not 



* Callisoma punctata, Costa ? Mr. Hope refers to a species under this name, 

 probably the type of Costa's genus. It is not in his paper in the ' Rendiconto 

 della Reale Accademia delle Scienze di Napoli,' 1853, nor do I know where it is 

 to be found. 



