88 BULLETIN 97, UNITED STATES NATIONAL MUSEUM. 



regions by a sulcus; a slight depression between gastric and cardiac, 

 regions and another behind the latter. Front slightly projecting, 

 notched in middle. Antero-lateral margins not defined by a ridge; 

 sides of carapace broadly rounded. Orbits nearly circular; eye- 

 stalks very short and stout. Antennae shorter than width of front. 



Palp of outer maxilliped 2-jointed. 1 



Chelipeds moderate, exceeding first pair of legs; hand narrow, 

 oblong, somewhat compressed, and concave on inner face; fingers 

 about as long as palm, subcylindrical, hooked at tip, and not dentate 

 on inner margin. 



Legs subequal (last pair a little shorter than others), moderately 

 slender, somewhat compressed, joints not unusually widened ; dactyl! 

 rather slender, curved, and from one-half to two-thirds length of 

 propodi. 



FlO. 43. PlNNOTHEBES PDBESCENS, FEMALE HOLOTTPE. O, GENEBAL OUTLINE, X 



6, BDCCAL AUEA. (AFTEB HOLMES.) 



Abdomen rounded, slightly longer than broad, and covering entire 

 sternal area. Body and legs covered with a uniform, short, dense 

 pubescence. (After Holmes.) 



Measurements. Female holotype, length of carapace 9.75, width 

 of same 10 mm. In Holmes's figure the carapace is shown longer 

 than wide, perhaps due to flattening out the front in drawing. 



Material recorded. Muleje Bay, Gulf of California, Mexico; 1 

 female holotype (destroyed in San Francisco fire). 



PINNOTHERES BARBATUS Desbonne. 



Plate 19, figs. 8-11. 



Pinnotheres barbata DESBONNE, in Desbonne and Sohramm, Crust. Guade- 

 loupe, pt 1, 1867, p. 44 (type-locality, Guadeloupe; type probably not. 

 extant). 



Diagnosis. Heavily bearded below and on margins of legs. 

 Orbits of female invisible from above. Dactyli of legs falcate. 



1 It is likely that there is a small third segment which was overlooked, as was the case 

 with concharum. 



