BRACHYURA. RATHBUN. 



97 



Carapace thin and yielding, high, the upper surface 

 transversely oblong-globose, the sides spreading outward 

 posteriorly. Posterior margin, between legs of last pair, 

 transverse. Two broad shallow furrows lead backward 

 from the orbits but do not meet. Eyes colourless, fitting 

 in the orbits. 



Palp of maxilliped two-segmented, lacking a dactylus. 



Fig. 1. Left outer maxilliped, Pinnotheres subglobosa. 



The slender palm is more than twice as long on its upper 

 margin as its greatest width. The whole propodus has a 

 slightly sinuous lower margin, and a fringe of hair on the 

 inner surface just above the margin ; the finger embraces 

 less than one-third of that margin. 



Legs similar, dactyli curved; second pair longest, its 

 dactylus also longest ; the first and third legs are subequal, 

 the fourth shortest. The left leg of the second pair is 

 longer than the right ; whether this is individual or a 

 specific character as in certain American species, only an 

 examination of further material can determine. 



The abdomen is very capacious, wider than the widest 

 part of the carapace and envelops the sternum and bases 

 of the legs. The sternal cavity has a dense fringe of hair. 



