KROYERA ARENARIA. 



AMPHIPODA. 



NATATORIA. 



173 



PIIOXIDES. 



KROYERA ARENARIA. 



Specific character. Eyes small, round. Antennte snliequal. First pair of 

 gnatliopoda as in Monoculodes. Second pair having the propodos long and 

 narrow ; the distal extremity of the carpus inferiorly produced beyond the 

 apex of the dactylos. Posterior pair of pleopoda not so long as the preced- 

 ing. Telson entire, dorsally concave. 



Length, ^ inch. 



Kroyera arenaria. Spence Bate, Tyneside Field Nat. Club, vol. iv. pt. 1. 

 p. 15, pi. ii. fig. 1. Cat. Amph. Brit. Mus. p. 106, 

 pi. xvii. fig. 4. 



The body is smooth, and the head considerably pro- 

 duced and anteriorly depressed. The eyes are of mode- 

 rate size, round, white, and placed behind the superior 

 antennae. The superior pair of antennae reach to the 

 fourth segment of the body, and have the first joint of 

 the peduncle longer than the other two, which are short, 

 and scarcely larger than the first articulus of the flagel- 

 luni, which is about twice the length of the peduncle, 

 and consists of about twelve or fourteen articuli. The 

 inferior pair of antennae reach one-fourth further than 



