couoniHD.E, 1143 



19. Amphithoe Rathkii. 

 Amphithoe Rathkii, Zuddach, Si/n. C'nist. Pniss. Pfodr. p. G. 



Without rostrum. Autcnnaj suboqucil : superior reaching to the 

 fifth or sixth segment of the pleon ; peduncle having the Lost joint 

 furnished with a small dentiform process on the inferior portion 

 of the distal extremity ; flagellum ha^ang about twenty articuli, 

 each furnished with two short hairs, wliich give the inferior margin 

 a serrated appearance. Infei-ior antennae having the peduncle 

 longer than the peduncle of the superior, the last two joints being 

 nearly equal ; flagellum consisting of nearly twenty articuli. In 

 the cephalon are two renilbrm spots, in which eyes arc placed. 

 Gnathopoda subequal ; propoda tolerably large, tumid, and pyri- 

 form, inferior margin pilose; dactylos curved, being half the 

 length of the inferior margin. First two paii's of pereiopoda 

 slender, with the inferior margins spinose and setose ; posterior 

 pair having the bases dilated, with the posterior mai-gin crenu- 

 lated ; dactyla on all the pereiopoda large. Posterior pair of 

 pleopoda with the rami shorter than the peduncle, lanceolate, 

 having the margins dentated and ciliated. Telson oblong, simjjle, 

 rounded at the apex. 



In Wig female the gnathopoda and pereiopoda are more slender. 



Length 3 lines. 



Hah. Baltic, near Gadanum. — Abbreviated from. Zaddach. 



20. Amphithoe Reynaudii. 



Amphitoe Reynaudii, Edwards, Ami. des Sc. Nat. xx. p. 378 ; Hist, 

 des Crust, iii. p. 35. 



"In general foiTQ the animal resembles AmphWioe Armorka* , but 

 may be distinguished from it by the gnathopoda ha\'ing exactly 

 the same form, -with the propoda elongated, a little enlarged at the 

 base, and with the dactyla impinging against the inferior margin. 

 Basos of the posterio" pair of pereiopoda long- quadrate. Telson 

 small, triangular, and obtuse at the apex. 



" Hah. Cape of Good Hope." — Edwards. 



21, Amphithoe Chilensis. (Plate XLII. fig. 5.) 

 Ampbithoe ChUensis, Nicoli, Gai/s Chili, Cn(M. pis. 2-5, 

 Superior antenna) three-fourths as long as the animal, having the 

 first joint of the peduncle as long as the cephalon ; second as long 



* Vidt Appendix. A)iij>hitho'c Annorica nppoars to bclonj; to tin- ficims AVcw. 



k2 



