2Q2 NATURAL HISTORY BULLETIN. 



acute granules. The three posterior protuberances are acute, 

 conical spines, upturned at the tips, the lateral pair two-thirds 

 the length of the median. The front is not prominent, is 

 slightly inclined upward and divided into two blunt, finely 

 granulated teeth separated by a shallow sinus. It is wider 

 proportionally than in subglobosa. The pterygostomian chan- 

 nel projects only slightly beyond the orbital margin and does 

 not exceed the front; of the two notches at its extremity, the 

 outer is broad, deep and U-shaped, the inner is very shallow. 

 The outer maxillipeds are similar to those of subglobosa ; the 

 exognath reaches nearer the end of the upper margin of the 

 pterygostomian channel than in that species. In the abdomen 

 of the male, the third, fourth and fifth segments are coalesced, 

 and the sixth is partially soldered to these, the dividing line 

 being visible. The sutures between the first, second and 

 third segments are not as clearly marked as in subglobosa. 

 The abdomen for the greater part of its length is narrower 

 than in subglobosa. 



Chelipeds about twice the length of the carapace. Merus 

 a little shorter than the carapace, exclusive of posterior spine, 

 slender, cylindrical, not tapering, coarsely and rather densely 

 granulate, with a blunt tooth at the posterior proximal end, as 

 in subglobosa. Carpus and manus finely granulate. Palm 

 narrowing distally, a little more than three times as long on 

 its outer margin as its greatest width. Dactylus about one- 

 fourth longer than the palm; armature similar to that of sub- 

 globosa, that is, there are about eight longer, slender spines at 

 tolerably regular intervals, the interspaces with from nine to 

 twelve small irregular spines. The ambulatory legs are 

 slender; propodi less compressed than in subglobosa; dactyli 

 smooth and furnished with a fringe of hair on opposite sides 

 (superior and inferior margins) ; this fringe is longer and 

 more noticeable than in subglobosa where the two lines are 

 near together, on the upper and posterior surfaces, and the 

 dactyli are deeply grooved. 



Dimensions. — Immature male, length to tip of median spine 

 17, length exclusive of spine, 14.5, width 13.6, length of 



