COMPLETE HAIG : EASTERN PACIFIC PORCELLANIDAE 165 



lected during Allan Hancock Pacific Expedition of 1938 at Velero 

 III station 845-38. Paratypes: 94 specimens from the same and nine 

 other stations (see Table 51). Specimens collected by R. E. Coker at 

 Bahia de Sechura and by W. L. Schmitt on October 23-24 at Salaverry 

 are not designated paratypes, since they were not at hand during the 

 drawing up of the description. 



Diagnosis: Carapace with a tuft of plumose hairs on front; anterior 

 margin of carpus with two to four granulate-edged teeth ; manus cov- 

 ered with small granules, that of major cheliped with vestigial plumose 

 hairs or a short pile, that of minor cheliped with a thick pile and 

 with scattered long, flexible, non-plumose setae; walking legs with long 

 plumose hairs ; telson seven-plated ; no pleopods in male. 



Description: Carapace about as broad as long or very slightly 

 broader; strongly convex front to back, surface slightly uneven, lightly 

 plicate on posterolateral regions, otherwise punctate; front with a tuft 

 of plumose hairs, carapace otherwise naked except for traces of pubes- 

 cence revealed, under high magnification, as very short tufts arising 

 from punctae. Front narrow, rounded in dorsal view, trilobate in fron- 

 tal view, the median lobe produced. Orbits deep; outer orbital angle 

 produced into a tooth. Separated portion of side wall consisting of one 

 large piece and sometimes several very small ones. 



First movable segment of antenna granular, with a tubercle on an- 

 terior margin ; second granular ; third nearly smooth ; flagellum with 

 very short hairs visible only under magnification. Outer maxillipeds 

 faintly rugose, ischium usually covered with scattered short hairs. 



Merus of chelipeds rugose dorsally, with large flattened granules 

 near posterior margin ; anterior margin armed with a strongly project- 

 ing, subtriangular lobe, covered with small flattened granules; ventral 

 surface nearly smooth. Carpus with a broad lobe on anterior margin, 

 cut into two to four distinct, granulate-edged teeth, the proximal the 

 largest, others progressively smaller; lobe and upper surface of carpus 

 covered with small granules, latter flattened anteriorly, becoming larger 

 and more projecting near posterior margin, arranged in uneven longi- 

 tudinal rows ; surface covered with short plumose hairs arising in groups 

 from the distal end of each granule, usually long enough to conceal all 

 but the most projecting granules, but only scattered plumose hairs pres- 

 ent in small specimens; ventral surface nearly smooth. Manus of major 

 cheliped with small granules, flattened on inner side, larger and more 

 projecting near outer margin; on fingers, the granules tending to be- 



