38 Bulletin Vanderhilt Marine Museum, Vol. V 



of odd-shaped, irregular small pittings that are separated from one 

 another. Similar pittings occur sparsely on the hepatic region, on 

 the branchial region between the two large lobes, and a few very small 

 ones on the gastric region in the median line. The entire lateral mar- 

 gin is crenulate and the entire dorsal surface of the carapace is paved 

 with microscopic, fiattish, low granules. The male belt is narrowly 

 ovate, triangulate, seven-segmented and it and the adjacent portion 

 of the sternal plastron are transversed by alternate deep pittings and 

 ridge-like granular areas. 



The right cheliped, (the left one is missing), is of moderate size, 

 closely appressed to the carapace, only the distal border of the merus 

 being visible beyond the carapace; the carpus is large, very convex 

 dorsally and paved with coarse rounded granules ; the propodus is not 

 visible dorsally and is short and high, the height being quite two- 

 thirds of the length of the palm, which is greatly dilated on the outer 

 surface, crested on the upper margin, this crest consisting of about 

 three unequal, triangulate teeth ; the upper portion of the convex outer 

 surface of the palm is deeply pitted, the interstices being granulose, 

 the lower portion is similarly but less deeply sculptured. The pro- 

 podal finger is short, thick, deflected, with a sharp tip and serrate 

 dentition. The hinged finger is much smaller and swings obliquely 

 downward, fitting upon the propodal finger throughout its length and 

 having a sharp tip and seven serrate teeth; there are two lines of 

 granules on the outer face of the upper finger. 



The ambulatories are small, closely appressed to each other and to 

 the body, decreasing in length in the order 1, 2, 3, 4. Each has the 

 merus wide, compressed, with a laminate margin ; the carpus and pro- 

 podus wide, compressed, with a double carinate upper margin and a 

 similar double lower margin, giving the joints a four-sided aspect; the 

 dactyl is similarly compressed, its margins carinate, its tip an acute 

 curved claw. The exposed upper margins are bicarinate, with the in- 

 terstices coarsely, irregularly granulose. 



The antennulae are not very large and fold obliquely-transversely 

 within the thick margined f ossett that lies beneath the frontal margin 

 and is divided by a thick medium septum. 



The antennae appear to consist of two articles, a small basal article 

 wider than long and arising above and near the apex of the epistome, 

 and supporting a much larger second article that lies below the lower 

 margin of the antennulary fossett and having its lower, or outer, lat- 

 eral margin convex, its inner lateral margin moderately concave, 



