COMPLETE HAIG : EASTERN PACIFIC PORCELLANIDAE 129 



dition the juvenile holotype specimen could not be measured accurately. 

 Streets reported it as 0.18 inch. 



Color: In alcoholic specimens collected in 1954, the entire crab 

 was pale orange, with the granules on the chelipeds a darker orange 

 and small dark orange spots on the carapace. Older preserved specimens 

 retained traces of red blotches on the chelipeds. None had a white 

 spot on the front or striped legs, as noted by Streets for the holotype. 



Ecology : Nearly all the known material was collected in the littoral, 

 under stones. Specimens from Mexico taken by E. Y. Dawson may 

 have been washed from algae. The species was taken once from the 

 Velero III by diving at 2 fathoms, and was once dredged in 10 fathoms 

 from a sand and shell bottom. 



Ovigerous females have been collected in January, March, May, 

 and September. 



Remarks: Prior to the recent report on Askoy porcellanids (Haig, 

 1957b), this species was known only from the holotype, a dried juvenile 

 specimen in the collections of the Academy of Natural Sciences of 

 Philadelphia. 



The identity of the Brazilian species listed by Moreira (1901) as 

 Pachycheles mexicanus is not known. 



Range: Mazatlan at the mouth of the Gulf of California, south to 

 Punta Santa Elena, Ecuador. PExtralimital : Isla Charles, Galapagos 

 Islands. 



Neopisosoma dohenyi, new species 

 Plate 9 ; plate 30, fig. 4 

 Types: Holotype, male, Allan Hancock Foundation Cat. No. 562, 

 from Islas Las Tres Marietas, Bahia de Las Banderas, Mexico, shore; 

 March 21, 1956; collected by Jens W. Knudsen. Paratypes: 46 speci- 

 mens from the same and five other stations (see Table 41). Specimens 

 collected by J. Xantus at Cabo San Lucas, Gulf of California (Mu- 

 seum of Comparative Zoology 1373) were not at hand during the 

 drawing up of the description and consequently are not designated 

 paratypes. 



Diagnosis: Chelipeds covered with rounded, projecting granules; 

 no crests on dorsal surface of carpus; anterior margin of carpus with 

 four to six narrow teeth, some of them bifid at tips; manus of both 

 chelipeds covered with a short pubescence; telson five-plated; no pleo- 

 pods in male. 



