COMPLETE HAIG : EASTERN PACIFIC PORCELLANIDAE 177 



Text-fig. 5. Basal segment of right antennule of 1, Clastotoechus diffractus, x 17; 

 2, C. vanderhorsti, x 26 ; 3, C. nodosus, x 56. 



nal crest, granules of crest somewhat larger and more flattened; pos- 

 terodistal angle produced into a curved spine. Manus and fingers cov- 

 ered with granules and pubescence as in carpus; outer margin of manus 

 with a low rounded crest extending onto pollex, along it a row of small 

 granules sometimes produced into spinules; outer margin approximately 

 to base of pollex almost invariably provided with a thick brush of fine 

 plumose hairs in females, devoid of this brush in males. Fingers rather 

 long and slender, meeting entire length or slightly gaping, gape with a 

 slight trace of pubescence. 



Walking legs rugose, all segments with long non-plumose setae and 

 anterior margins with a fringe of short plumose hairs. 



Material examined: Cabo San Lucas, Gulf of California; J. Xantus, 

 collector; eight males, five females (two ovigerous), one young (Mu- 

 seum of Comparative Zoology Cat. Nos. 1375 and 8019). 



Cove west of Squall Point, Bahia Tenacatita, Mexico, shore; Feb- 

 ruary 5, 1954; Velero IV station 2600-54, J. S. Garth, collector; one 

 ovigerous female. 



San Lorenzo Rocks, Acapulco, Mexico, shore; January 30, 1954; 

 Velero IV station 2591-54, J. S. Garth, collector; male, holotype (Allan 

 Hancock Foundation Cat. No. 542), and three males and four ovigerous 

 females, paratypes. 



