APPENDIX. 



509 



AMPHIPODA. 



NATATORTA. 



LYSIANASSIDES. 



(Vol. I. p. 118.***) 



Genus— LEPIDEPECREUM. 



Generic character. Cephalon having the orbital or intra-anten- 

 nal process considerably developed and produced. Pereion well 

 developed. Pleon having the last four segments very short. Eyes 

 not made out; supposed to occupy the intra- antcnnal process; — 

 superior antennae having the upper surface of the first two joints of 

 the peduncle considerably produced anteriorly, hawng no secondary 

 appendage. Inferior antennas posterior to flie superior. Mandibles 

 furnished with a biarticulate appendage. First pair of gnathopoda 

 moderately robust, subchelate. Second pair feeble and chelate or 

 subchelate. Posterior pair of pleopoda short, biramous. Telson ^ — ? 



LEPIDEPECREUM CARINATUM, N.S. 



Specific character. Body dorsally carinated. Segments subeqiial. Fourtli 

 and fifth segments of pleon produced into a tootli. Gnathopoda minute and 

 slender. 



Length, one-fifth of an inch. 



The cephalon has the intra-antennal process produced 

 anteriorly as far as the infero-distal extremity of the first joint 



