THE SPIDER CRABS OF AMERICA 



119 



Measurements. — Male, holotype, length of carapace 16.5, width 

 12.7 mm. Female (18101), length 17. .5, width 13.2 mm. 

 Bange. — Gulf of Mexico; 68 to 169 fathoms. 

 Material examined. — See table, page 118. 



COLLODES INERMIS A. MUne Edwards 



Plate 38, figs. 3 and 4 



Collodes inermis A. Milne Edwards, Crust. R6g. Mex., 1878, p. 179; 1879, 

 pi. 32, figs. 1-lc (type-locality, coast of Brazil, 17 fathoms, lat. 11° 49' 

 S., long. 37° 27' W.; holotype, Cat. No. 2949, M. C. Z.).— Aurivillius, 

 K. Sv. Vet.-Akad. Handl., vol. 23, 1889, p. 36.— Rathbun, Bull. U. S. 

 Fish Coram., vol. 20, for 1900, pt. 2 (1901), p. 56. 



Diagnosis. — Postorbital lobe small. No spines on carapace. Car- 

 apace partially granulate. Two very small rostral teeth. Fingers 

 of male widely gaping. 



Description. — Carapace depressed ; 

 partially granulate, especially along 

 the posterior margin, on the summit 

 of the cardiac region and the outer 

 two-thirds or more of the branchial 

 regions; a few granules on the front, 

 on the middle of the gastric region and 

 on the outer margin of the hepatic 

 region. Amount of granulation varia- 

 ble. Rostrum bluntly triangular, tip 

 cut into two minute teeth. Post- 

 orbital lobes small, directed straight 

 outward and much exceeded by the ej^es. Sternum of male coarsely 

 granulate except between the chelipeds; abdomen nearly smooth save 

 for the boss at either side of the third segment and the spine or 

 tubercle on the first segment. 

 Abdomen of female covered 

 with depressed granules. 



Basal article of antenna with 

 margins almost unarmed, the 

 outer one finely roughened, the 

 inner margin not exceeded by 

 the outer one. Merus of chel- 

 ipeds with denticulate margins, 

 chela dilated in male, fingers Avidely gaping for their proximal fifth, 

 this portion of the fixed finger being curved downward and excavate, 

 a triangular tooth at end of gape; a broad, low tooth projects from 

 the dactylus into the middle of the gape. 



Color. — Probably dark, as the paratype after long preservation 

 showed traces of dark blue and olive; chelipeds green. 



Fig. 43.— Collodes inermis, male (24142), 

 frontal and orbital region, x 15 



Fig. 44.— Collodes INERMIS, male (24142), left chela, 

 X 13.33 



