COMPLETE HAIG: EASTERN PACIFIC PORCELLANIDAE 125 



February 9, 1933; collected during Allan Hancock Pacific Expedition 

 of 1933 at Velero III station 65-33. Paratypes: 13 specimens from 

 the same and four other stations (see Table 39). 



Diagnosis: Chelipeds covered with flattened granules; dorsal sur- 

 face of carpus with three longitudinal crests defined by distinct grooves ; 

 anterior margin of carpus entirely occupied by four or five conical 

 teeth; manus of both chelipeds thickly covered with long hairs; telson 

 seven-plated ; a pair of pleopods in male. 



Description: Carapace about as broad as long, subquadrate, regions 

 usually distinct ; posterolateral regions lightly plicate, surface other- 

 wise punctate, devoid of hairs except for occasional traces anteriorly. 

 Front arcuate and rather strongly projecting in dorsal view, with a shal- 

 low median groove; in frontal view trilobate or transverse with a 

 strongly deflexed median projection. Orbits deep, sharply oblique. 

 Side wall extending to epibranchial level, with a narrow posterior pro- 

 jection continuing to level of mesobranchial region. 



First movable segment of antenna with a strong crest on anterior 

 margin ; second finely granular, with a vestigial anterior crest in large 

 specimens ; third nearly smooth ; flagellum with short hairs. Outer 

 maxillipeds lightly punctate. 



Merus of chelipeds rugose or with flattened granules on dorsal sur- 

 face; anterior margin armed with a strongly projecting, conical lobe; 

 ventral surface smooth. Carpus devoid of pubescence, armed on an- 

 terior margin with four or five strong, conical, smooth-edged teeth, 

 about equal in size, a similar additional tooth formed by a projection 

 of the anterodistal angle; surface with four longitudinal crests defined 

 by distinct grooves: the first at base of teeth, extending to distal end 

 of carpus; second at about center of carpus, not extending its entire 

 length but interrupted near distal end; third narrow, near posterior 

 margin of carpus and extending to about same le\-el as second, the 

 grooves defining it and second crest joined around their ends; fourth 

 extending along posterior margin, its surface obliquely rugose; ventral 

 surface smooth. Manus of both chelipeds covered with flattened gran- 

 ules; a strong longitudinal crest near inner margin extending to base 

 of dactylus; entire surface, from outer margin of this crest to outer 

 margin of manus, thickly covered with long plumose hairs, the pile 

 often extending nearly to tip of pollex, and ending sharply along outer 

 margin of manus ; outer edge of manus decorated with a row of small 

 granules; ventral surface smooth or punctate. Fingers nearly smooth. 

 Dactylus of major cheliped often strongly curved, cutting edge with a 



