396 BULLETIN 152, UNITED STATES NATIONAL MUSEUM 



Diagnosis. — Five well marked, triangular, antero-lateral teeth. 

 Transverse granulated lines on carapace. Upper surface of wrist and 

 palm tuberculate. 



Description. — Regions of carapace plainly marked, finely granulate, 

 crossed by transverse lines of coarser granules — on front and epigastric 

 lobes, two on each protogastric region, one at widest part of meso- 

 gastric region, one hepatic, two on anterior part of branchial region, 

 while on posterior part of same region there is a nearly longitudinal 

 row of very short granulated rugae which extend to posterior margin; 

 the last of these is the strongest. Front narrow, little more than 

 one-fourth width of carapace ; margin thick, granulate, bilobed, median 

 notch V-shaped, lobes most advanced near the notch, outer angles 

 distinct, blunt teeth. Margin of orbit granulate, outline convex 

 between the two superior fissures; outer sinus a large V, inner lower 



Figure 61.— Hexapanopeus NiCARAGUENsis, male.holotype (Copenhagen 



MUS.), CARAPACE 13 MM. WIDE, DORSAL VIEW 



angle prominent, triangular, intervening outline convex. Antero- 

 lateral teeth five (orbital included), increasing rapidly in size from first 

 to fourth, fifth nearly as large as fourth, thick, upturned, margins 

 denticulate. From the second a granulate bilobed crest extends 

 along subhepatic region to antero-lateral angle of buccal cavity. The 

 fourth and fifth teeth have a superior crest prolonged on to the 

 carapace. 



Chelipeds very unequal, granulate, granules coarser on elevations 

 and margins. Merus as high as long, a strong subterminal tooth 

 above, behind it a denticle. Carpus covered outside with granulated 

 tubercles, anterior and outer margins thickened; inner tooth small. 

 The fine granules of the palm form transverse reticulating lines; 

 upper and posterior end rough with granulated tubercles which foim 

 two rows above and have a tendency to form longitudinal lines on 



