COMPLETE HAIG : EASTERN PACIFIC PORCELLANIDAE 153 



able. The species should be looked for in depths of 10 fathoms and 

 greater, in the Galapagos Islands and the adjacent mainland. 



The new species is named in honor of the research vessel Velero 

 III, from which, during the years 1932 through 1941, many biological 

 novelties were collected. 



Range: Known only from the type locality, off Isla Bindloe, Gala- 

 pagos Islands. 



Pachycheles spinidactylus Haig 



Plate 33, fig. 2 



Pachycheles spinidactylus Haig, 1957a, p. 31, pi. 7, figs. 1-4 (type 

 locality, Islas Las Tres Marietas, Bahia de Las Banderas, Mex- 

 ico) ; 1957b, p. 3. 



Previous records: 

 Mexico. Isla Isabel: (Haig 1957a). Islas Las Tres Marietas, Bahia de 



Las Banderas: J. W. Knudsen (Haig 1957a). Acapulco: (Haig 



1957a). 

 Colombia. Bahia Humboldt: Askoy (Haig 1957b). 



Diagnosis: Carapace with a tuft of plumose and non-plumose hairs 

 on front ; carpus covered with small conical tubercles with tufts of long, 

 stiff, non-plumose setae surrounded by clumps of short plumose hairs 

 arising from their bases, its anterior margin with three (occasionally 

 four) teeth; manus and fingers with similar stiff, non-plumose setae 

 and plumose hairs; walking legs with long plumose hairs and a few 

 non-plumose setae; telson seven-plated in males, five-plated or incom- 

 pletely seven-plated in females; no pleopods in male. 



Description: Carapace about as long as broad or slightly broader; 

 posterolateral regions plicate, surface otherwise faintly rugose; front 

 with a tuft of plumose and non-plumose hairs, scattered short hairs else- 

 where anteriorly. Front narrow, rounded or sinuous in dorsal view, 

 trilobate in frontal view, the median lobe somewhat produced. Outer 

 orbital angle produced into a low, broad tooth. Separated portion of side 

 wall consisting of one large piece and sometimes a number of fragments. 



First movable segment of antenna with a tubercle, sometimes spine- 

 tipped, on anterior margin ; second and third granular ; flagellum naked. 



Merus of chelipeds rugose, anterior margin with a broad, rugose, 

 strongly projecting, granulate-edged lobe, sometimtj obscurely bifid at 

 tip. Carpus armed on anterior margin with three spine-tipped teeth, a 

 fourth occasionally present; dorsal surface covered with small conical 



