THE SPIDER CKABS OF AMERICA 107 



Descnption. — Carapace nearly naked, conspicuously granulated, 

 especially on the branchial regions ; granules rather large and distinctly 

 prominent. An erect obtuse spine on the gas- 

 tric region, a larger one on the cardiac region, 

 and one on the first segment of the abdomen. 

 Anterior half of cardiac region and sulci or 

 depressed parts of carapace generally, smooth 

 and glabrous. Rostrum sub triangular, fissured; 

 tip minutely bifid, points tuberculiform. A ^^^ 



minute tooth on superior arch of orbit. ' "^ ' 



Chelipeds of female weak. Ambulatory legs fig. si.-collodes geano- 

 rather depressed, ciliated, dactyli hairy. Mar- ^us, female (21863), ros- 



• fi-lx -1^ •+ TRUM.X 26.66 



gm of lemale sternum raised around egg-cavity; 



abdomen strongly indurated, w-ith the outer surface covered mth 



large closely set granules. 



Measurements. — Female (55766), length of carapace 9.7, width 

 8.6, length of first ambulatory leg 15.6 mm. 



Range.—South.em and Gulf coasts of Lower California, Mexico. 

 Shallow water to 10 fathoms. 



Material examined. — 



Cape St. Lucas, Lower California; March 23, 1911; Albatross; 1 

 ovigerous female (55766). 



E. of La Paz, in Gulf of California; lat. 24° 11' 30" N.; long. 109° 

 55' 00" W.; 10 fathoms; Sh.; April 30, 1888; station 2828, Alba- 

 tross; 1 ovigerous female (21863). 



COLLODES TRISPINOSUS Stimpson 



Plate 36, figs. 5 and 6 



Collodes irispinosus Stimpson, Bull. Mus. Comp. Z06I., vol. 2, 1871, p. 120 

 (type-localities, off the Quicksands, off Carysfort Reef, and off French 

 Reef, 34 to 50 fathoms; types not extant). — A. Milne Edwards, Crust. 

 R6g. Mex., 187S, p. 178. 



Collodes depressus A. Milne Edwards, Crust. R^g. Mex., 1878, p. 176; 

 1879, pi. 32, figs. 4-4e (type-localities, near Sombrero, 54 fathoms, and 

 west coast of Florida, 20 fathoms; cotypes from Sombrero and W. Florida 

 in M. C. Z., and from W. Florida in Paris Mus.). — Smith, Proc. U. S. 

 Nat. Mus., vol. 6, 1883, pp. 5 and 8; Rept. U. S. Fish Commr. for 1885 

 (1886), p. 621 [17].— Rathbun, Proc. U. S. Nat. Mus., vol. 17, 1894, p. 52. 



Diagnosis. — Three long, slender, median spines. Rostral spines 

 slender, longer than broad. Female abdomen covered with large, 

 depressed granules. 



Description. — Carapace hairy, covered with coarse granules every- 

 where except on the front, the anterior portion of the gastric region, 

 and about the bases of the spines. There is a slender, erect, capitate 

 spine on the gastric, and one on the cardiac region, and a third on 

 the first segment of the abdomen. The rostrum bears two minute 



