COMPLETE HAIG : EASTERN PACIFIC PORCELLANIDAE 141 



terior portion of the carpus, and plumose hairs on the carpus and 

 manus of the chelipeds and on the walking legs. In P. serratus the 

 anterior margin of the carpus is not cut into three distinct teeth, and 

 the pubescence covering the chelipeds is finer and thicker than in 

 the Pacific species. 



Remarks: According to J. Forest (personal communication), the 

 type specimen in the Paris Museum, here designated lectotype, lacks 

 the maxillipeds on the right side. Mr. Forest has compared the type 

 with specimens from the Hancock Foundation, and found them to be 

 identical. 



Schmitt (1924b) tentatively identified specimens from Bahia de 

 Tepoca as Pachycheles panamensis Faxon. From his discussion it seems 

 probable that this material was actually P. setimanus. Confirmation 

 comes from a specimen, evidently from the same collection, examined 

 by the writer at the U. S. National Museum; this specimen was la- 

 belled Pachycheles panamensis but was found to be P. setimanus. None 

 of the porcellanids from this collection could be located at the California 

 Academy of Sciences, which sponsored the expedition on which they 

 were taken. 



Range: Throughout the Gulf of California, from San Felipe south 

 to Pulmo Reef; shore, exceptionally to about 28 fathoms. 



Pachycheles crassus (A. Milne Edwards) 

 Plate 31, fig. 1 ; text-fig. 4 

 Porcellana (Pachycheles) crassa A. Milne Edwards, 1869, p. 128, pi. 

 26, fig. 12 (type locality, Islas de las Perlas, Panama). Ortmann, 

 1897, p. 294. 

 Pachycheles crassus, Haig, 1957b, p. 5. 



Previous records: 

 Panama. Islas de las Perlas: (A. Milne Edwards). 

 Colombia. Isla Gorgona: Askoy (Haig), 



Diagnosis : Carapace smooth, shining, devoid of hairs, strongly con- 

 vex from front to back and, in females, markedly broader than long ; 

 carpus covered with large, rather flattened granules, its anterior mar- 

 gin with four or five teeth, the proximal one broad and truncate, others 

 narrow, conical, and progressively smaller; manus heavy, swollen, it and 

 fingers covered with large, coarse granules; walking legs almost de- 

 void of hairs; dactylus with two strong fixed spines on posterior mar- 



