524 



APPENDIX. 



AMPUIPODA. 



HTPERINA. 



HYPERIID^. 



{Vol. II. p. 19.*) 



Genus— VIBILIA. 



Vihilia. Edwakds, Ann. des Sci. Nat. t. xx. p. 386. 

 t. iii. p. 72. Spence Bate, Cat. Amph. B. 

 Lanceola? Say, Proc. Acad. Phil. p. 317. 



Hist, des Crust. 

 M. p. 299. 



Oeneric character. Ceplialon small. Pereiou sinouth, not dis- 

 tended. First two segments of the pereion short, the rest gradually 

 increasing in length. Segments of the pleon a little deeper than 

 those of the pereion. Eyes small. Antennoe short ; superior pair 

 terminating in a vertically compressed uniarticulate ilagellum. 

 First pair of gnathopoda small, slender, cylindrical, having the infe- 

 rior angle of the carpus hut little, if at all, produced ; second pair 

 having the inferior angle of the meros and carpus considerably pro- 

 duced anteriorl3\ First two pairs of pereiopoda subequally long. 

 Third and fjurth pairs longer than the preceding, subequal. Last 

 pair very short. Three posterior pairs of pleopoda, with the 

 peduncle long and the rami short and compressed. Telson single. 



VIBTLIA BOREALIS, N.S. 



Specific character. CepLalon not anteriorly produced. Pereion with the 

 .segments gradually enlarged. Flagellum of upper antenna; flat, with two 

 rows of cilia on the internal surface. Last pair of pereiopoda minute. 



Length, seven-twentieths of an inch. 



