1^0. 477] 



RHODE ISLAND COPE POD A 



643 



surface projects almost across the second segment. The left side 

 of the second segment of the abdomen has a small depression filled 

 with heavy bristles while the right side is convex and bears a few 

 spines (below the middle and so not shown in the drawing). The 

 last segment has a crown of spines, on the posterior edge. The 

 furca is slightly asymmetrical and each ramus is five times as long 



