32 



On a new Cr ah from the Indian Ocean, 



diameter of orbit. Buccal frame slightly narrowed anteriorly. 

 Merus of third maxillipeds about as broad as long, its 

 anterior margin straight. 



Larger cheliped about two and a half times the length o£ 

 the carapace ; merus shaped as in Trapezia, but its front 

 edge not expanded or serrated ; carpus with two longitudinal 

 ridges on its outer and upper surface, somewhat rugose 

 externally, its inner angle forming a blunt tooth. Hand 

 compressed, smooth and polished except above, where it is 

 faintly rugulose; the upper margin forms a ridge defined 



Calocarcinus afncanus, male, twice natural size. 



externally and internally by a groove ; lower edge rounded. 

 In the larger cheliped the depth of the palm increases 

 slightly distally, where it is about one-half of its length and 

 equal to the length of the fingers ; in the smaller cheliped 

 the depth does not increase, is less than half the length, and 

 shorter than the fingers. Both fingers furrowed, slightly 

 curved, sharp-pointed. Walking-legs moderately slender, 

 smooth, without hairs except on the dactyli, first pair equal 

 to or a little longer than the breadth of carapace. 



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