COMPLETE HAIG: EASTERN PACIFIC PORCELLANIDAE 149 



Remarks: Specimens from Colombia collected by the Askoy (Haig, 

 1957b) were the first to be recorded since the original description 

 of the species. Present material extends the range northward to El 

 Salvador. 



Range: Acajutla, El Salvador, south to Bahia de Santa Elena, 

 Ecuador. Shore to 4 fathoms. 



Pachycheles marcortezensis Glassell 

 Plate 33, fig. 3 

 Pachycheles marcortezensis Glassell, 1936, p. 290 (type locality, off 

 Isla Angel de la Guarda, Gulf of California) ; 1937, p. 86; 1938a, 

 p. 444. 



Previous records: Gulf of California. Off Isla Angel de la Guarda: 

 S. A. Glassell (Glassell 1936). Arena Bank: Zaca (Glassell 1937). 



Diagnosis: Carapace covered with non-plumose setae, shorter and 

 more close-set on front; carpus with four or five long, narrow, slightly 

 falcate teeth on anterior margin, outer half with three even longitudinal 

 rows of small projecting granules, entire surface (including teeth) cov- 

 ered with tufts of short setae becoming plumose in larger specimens; 

 manus covered with small projecting granules and with setae similar 

 to those of carpus; walking legs with long, non-plumose setae; telson 

 five-plated ; no pleopods in male. 



Description: Carapace about as broad as long; plicate on postero- 

 lateral regions, otherwise punctate; covered with non-plumose setae 

 forming a short pile on frontal region, longer and more scattered else- 

 where. Front transversely sinuous or with three shallow lobes in dorsal 

 view, distinctly trilobate in frontal view, the lobes about equally pro- 

 jecting. Outer orbital angle produced into a narrow, acute tooth. Sep- 

 arated portion of side wall consisting of one small piece. 



First movable segment of antenna with a spinule on anterior margin ; 

 second with two spinules; third nearly smooth; flagellum naked. 



Merus of chelipeds with a strongly projecting, subtriangular lobe 

 on anterior margin, rugose and often armed with a few spinules; lobe 

 and dorsal surface covered with short, non-plumose setae. Carpus with 

 four or five long, narrow teeth on anterior margin, somewhat falcate, 

 the proximal one longest and others progressively shorter; teeth and 

 anterior half of carpus covered with much-flattened granules, appear- 

 ing nearly smooth; posterior half with three even, longitudinal rows 

 of small, strongly projecting granules, a fourth row along posterior 



