COMPLETE HAIG : EASTERN PACIFIC PORCELLANIDAE 137 



ules on manus and fingers, sometimes more projecting and tending to 

 form longitudinal rows on outer part of manus, outer margin of latter 

 with a low granular crest; walking legs 2 and 3 thickly covered with 

 long plumose hairs; telson seven-plated in males, incompletely so in fe- 

 males; no pleopods in male. 



Description: Carapace slightly broader than long (1.1 times in 

 males, 1.1 to 1.3 in females), somewhat convex; plicate on posterolateral 

 regions, elsewhere covered with scattered punctae or short rugae, par- 

 ticularly in frontal and lateral regions; appearing devoid of hairs, but 

 under high magnification often showing very short setae arising from 

 the punctae and plications. Front rounded in dorsal view, in frontal 

 view faintly trilobate or transverse with a slight median projection. 

 Outer orbital angle produced into a small, sometimes indistinct tooth. 

 Separated portion of side wall consisting of one large piece, sometimes 

 a very small one posterior to it. 



First movable segment of antenna with a distinct conical tubercle 

 on anterior margin ; second somewhat roughened ; third smooth ; flagel- 

 lum naked. Outer maxillipeds punctate, under high magnification usu- 

 ally showing short setae as on carapace. 



Merus of chelipeds rugose on dorsal surface, with a rugose, sub- 

 triangular lobe, rather strongly projecting, on anterior margin; ventral 

 surface smooth. Carpus armed on anterior margin with a broad lamel- 

 lar lobe, occupying entire margin and shallowly notched along its edge 

 to form a low, broad tooth followed distally by a smaller one, the sur- 

 face of the lobe covered with small, crowded granules; dorsal surface 

 of carpus covered with granules somewhat larger than those of lobe and 

 not crowded so closely together, flattened and slightly imbricate in 

 anterior half or two-thirds, rounded and projecting in posterior third; 

 somewhat flattened and elongate on posterior margin, forming oblique 

 rugae; ventral surface smooth. Manus and fingers covered with gran- 

 ules similar to those on outer third of carpus; a trace of pubescence 

 sometimes, but not always, present between granules; outer margin 

 with a low, indistinct crest covered with smaller granules. Dactylus of 

 major cheliped curved, a large tubercle on cutting edge near articula- 

 tion with manus; pollex with a tubercle on cutting edge near tip; 

 fingers gaping. Fingers in minor cheliped straight, meeting for entire 

 length or nearly so. Gape of both fingers with a trace of pubescence. 

 Ventral surface of pollex and outer part of manus with flattened gran- 

 ules; rest of manus roughened; dactylus punctate. 



