ISOPODS OF NORTH AMERICA. 41 



"The pleon is of t)reiit leng'th, tlie live front segmenty sul)equal, 

 and each as long as the tirst free segment of the peiwon; epiniera 



6 



Fi(i. 35. — Apseudes gracilis (After Norman and Stebbing). n, Upper antenna, h, T^ateral 

 VIEW, c, Lower antenna, d. Side view of mouth parts and an abnormally developed first 



GNATHOPOD. C. MaNDIBLE. /, FiRST GNATHOPOD. fir, ANTERIOR PART OF BODY, FROM ABOVE. 



/(.Fifth leg. /, Pleopod. J, Last segment of abdomen, k. Second gnathopod. 



only slightly producecf, terminating in small spines, a central ventral 

 spine on each segment; last segnuMit as long as the preceding three, 

 havino- a numl)er of miniiti^ tuhorcles about it; termination slightly 



