I8OPODS OF NORTH AMERICA. 



41 



"The pleon is of great length, the five front segments subequal, 

 and each as long as the first free segment of the perseon; epimera 



6 



FIG. 35. APSEUDES GRACILIS (AFTER NORMAN AND STEBBING). o, UPPER ANTENNA. 6, LATERAL 

 VIEW, e, LOWER ANTENNA, d, SIDE VIEW OF MOUTH PARTS AND AN ABNORMALLY DEVELOPED FIRST 



GNATHOPOD. e, MANDIBLE. /, FIRST GNATHOPOD. fir, ANTERIOR PART OF BODY, FROM ABOVE. 



h, FIFTH LEG. i, PLEOPOD. j, LAST SEGMENT OF ABDOMEN, k, SECOND GNATHOPOD. 



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

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

 having a number of minute tubercles about it; termination slightly 



