214 STALK-EYED CRUSTACEA 



12. Pseudothelphusa belliana. 



The superior margin of front not keeled, smooth, low, 

 its width being about twelve times its height. Walking 

 legs elongated ; the sixth joint at least twice as long as 

 wide. The lower margin of large hand sinuous. The 

 sixth segment of abdomen of the male less than half as 

 long as proximal width. 



Mexico. 



13. Pseudothelphusa montana. 



The superior margin of front not keeled, smooth, its 

 width being about nine times its height. Walking legs 

 elongated ; the sixth joint at least twice as long as wide. 

 The lower margin of large hand sinuous. The sixth 

 segment of abdomen of the male less than half as long 

 as proximal width. 



Costa Rica, under trunks of trees. 



14. Pseudothelphusa tumimanus. 



Superior margin of front not keeled, smooth. Hand 

 with a tubercle at base of movable finger. Walking legs 

 not elongated ; the sixth joint less than twice as long as 

 wide. 



Costa Rica. 



15. Pseudothelphusa tristani. 



Superior margin of front not keeled, smooth. Hand 

 without a tubercle at base of movable finder. Walking 



