72 ALLAN HANCOCK PACIFIC EXPEDITIONS VOL.21 



Ecuador. Where the two species occur together, as off San Jose Light, 

 Guatemala, where they came up in the same dredge haul (station 930- 

 39), they can be separated without difficulty. 



Collodes granosus Stimpson 

 Plate E, Fig. 2; Plate 3, Fig. 5 



Collodes granosus Stimpson, 1860b, p. 194, pi. 2, fig. 4. A. Milne 

 Edwards, 1878. p. 177. Miers, 1879c, p. 645. Rathbun, 1898, p. 

 569; 1923b, p. 633; 1925, p. 106, pi. 36, figs. 1, 2; pi. 217, fig. 1. 

 Garth, 1948, p. 23. 



Type: Female holotype, length 9.1 mm, width 8.1 mm, no longer 

 extant, fide Rathbun (1925), and believed to have perished with Stimp- 

 son's collections in the Chicago fire of 1871. Female neotype: A.H.F. 

 No. 495, from 1% miles northeast of Cape San Lucas, Lower California, 

 Mexico, 10 fathoms, March 11, 1949, collected by the Velero IV at 

 station 1724-49. 



Type locality: Cape St. [San] Lucas, Lower California, Mexico, 

 John Xantus, collector. 



Localities subsequently reported, with collectors: Mexico: Lower 

 California: Cape San Lucas, Albatross (Rathbun, 1923b) ; Gulf of 

 California: east of La Paz, 10 fathoms, Albatross (Rathbun, 1898); 

 Ecuador: off Cape Pasado, 18 and 27 meters, Askoy (Garth). 



Atlantic analogue: Collodes trispinosus Stimpson. 



Diagnosis: Rostrum pyramidal, tip bifid. Carapace conspicuously 

 granulated, particularly on branchial regions, depressions smooth and 

 bare. Three median spines, one gastric, one cardiac, and one abdominal. 

 Postorbital spine large, outer margin granulate, inner margin concave, 

 curving around eye. Basal antennal article with external margin coarsely 

 granulate, internal margin entire. Male first pleopod swollen opposite 

 spermiducal pore, a cluster of longer spines near tip. 



Description: Carapace nearly naked, conspicuously granulated, 

 especially on the branchial regions; granules rather large and distinctly 

 prominent. An erect obtuse spine on the gastric region, one on the 

 cardiac, and one on the basal [segment] of the abdomen. The anterior 

 half of the cardiac region and the sulci or depressed parts of the 

 carapace generally, smooth and glabrous. Rostrum subtriangular, fis- 

 sured; tip minutely bifid. A minute tooth on the superior arch of the 

 orbit. Chelipeds [of the female] weak. Ambulatory [legs] rather 

 depressed, ciliated, dactyli hairy. Margin of sternum raised around the 



