126 



BULLETIN M, UNITED STATES NATIONAL MUSEUM. 



unequal, wavy, transverse rugae which at the margins tend to form 

 teeth ; a strong crest runs horizontally inward from the obtuse lateral 

 angle. Antero-lateral margin cristiform, terminating at epistome and 

 armed with three or four low teeth, the posterior of which is tooth- 



FlO. 72. DiSSOUACTXLUS CALMANl, ODTEB MAXILLIPEI) OF FEMALE (48570), X 50. 



like, the others almost crenations. Front produced, thickened, edge 

 nearly transverse, but faintly bidentate or even quadridentate. 

 Upper margin of orbit narrow, cut deeply into carapace, outer angle 

 blunt, thickened. 



Lower surface of carapace hairy. Pterygostomian ridge sharp and 

 prominent near epistome. Buccal cavity subtri angular, outer mar- 

 gins convex. Me- 

 rus-ischium of the 

 outer maxillipeds 

 elongate-spatula te, 

 extremity narrow ; 

 palpus relatively 

 very small, folding 

 in a groove in the 

 edge of the merus; 

 1 last 2 segments to- 

 j gether shorter than 

 carpus ; dactylus 

 nearly as large as 

 propodus. 



Chelipeds slender ; 

 merus, carpus and 

 propodus rough 

 with rugae, those of propodus oblique, the rugae arranged in 4 

 longitudinal ridges on outer and upper surface; palms narrow, 

 fingers deflexed, not gaping, stout, grooved, tips acute, curved and 

 overlapping. 



a 



FlO. 73. DlSSODACTYLUS CALMANI. a. LAST RIGHT LEO OF 



FEMALE HOI.OTYPE. X 14; 6, ABDOMEN OF MALE (.50108), 

 X 12. 



