98 



GAMMARIDiS. 



AMPEIPODA. 



NATATOniA. 



LYSIANASSrDES. 



ANONYX OBESUS. 



Specific character. — Three posterior segments of the pleon very short. 

 Superior anteunre having the secondary appendage as long as the primary. 

 Inferior antennoe scarcely longer than the superior. First pair of gnatliopoda 

 having the propodos ovate, tajiering, palm continuous with the inferior mar- 

 gin, and but slightly defined. Telson bilolied. 



Length \ inch. 



Anonyx obcsus. Spence Bate, Cat. Amph. Brit. Mus. p. 74, pi. xii. fig. 1. 



The animal is short, round, and obese, (whence its 

 specific name has been derived,) and the tail extends but 

 slightly beyond the last deep segment of the body. The 

 eyes were not visible in the specimen which we have 

 seen, which was sent to us preserved in spirits. The 

 superior antennae are rather longer than the head. The 

 first joint of the peduncle is very large, the second and 

 third short, the flagellum articulates with the peduncle 

 upon a process of the third joint, and consists of six 

 or seven articuli, the first of which is rather larger than 

 the others. The secondary appendage is as long as the 

 primary ; it originates in a depression immediately 

 above the articulation of the flagellum, and consists of 



