STALK-EYED CRUSTACEA 8^ 



first pair of walking legs is the longest ; the last pair is 

 small. The sternal plastron is almost circular. 

 Range. — American Coast, West Indies. 



I. Thoe puella. 



Thoe puella . . Stimpson, A. Milne Edwards. 

 Pisa latipcs . . Desbonne and Schramm. 



The carapace is wide in the interorbital region ; the 

 antero-lateral edges are straight or slightly concave ; the 

 regions are well marked and covered with granulations. 

 The superior orbital borders are very granular. The 

 rostral horns are granular, and separated by a deep notch. 

 The hand is smooth and polished, except at the joint, 

 where there are a few granulations ; the superior border 

 is sharp at its terminal portion. The fingers in the male 

 are very gaping ; the movable finger has a tooth near its 

 base; it is finely serrated at its extremity. The arm and 

 forearm have no excavations, but have small granulations 

 outside and below. The walking legs are depressed ; the 

 fourth joint of the three first pairs has longitudinal ridges ; 

 the ridges have deep concavities separated from each other 

 by small transverse ridges. 



Colour, red, with yellow spots on the carapace. 



Range. — Guadaloupe, Gulf of Mexico. 



2. Mithrax. 



MitJirax .... Leach, Latreille, Milne Edwards, 



Miers. 

 Nemausa .... A. Milne Edwards. 

 MitJiracubis . . . Stimpson, Miers. 

 Teleophrys . . . Stimpson. 



The carapace is depressed or moderately convex, 

 sometimes longer than broad, but usually transverse and 



