COMPLETE HAIG: EASTERN PACIFIC PORCELLANIDAE 9 



Megalobrachium smithi (Glassell), M. erosum (Glassell), M. festal 

 (Nobili), and Poly onyx nilidus Lockington. 



The ranges of nearly all previously described species are extended on 

 the basis of heretofore unpublished records. 



Recorded Specimens incertae sedis 



Specimens unidentifiable in our present state of knowledge of porcel- 

 lanid larval stages: 



Porcellana longicornis (megalops stage). Coventry, 1944, p. 537. 



Isla Maria Madre, Islas Las Tres Marias, Mexico, two specimens. 

 The megalopa are in the Academy of Natural Sciences of Philadelphia. 

 The identification with Porcellana longicornis, an eastern Atlantic 

 species, is obviously in error. 



Specimens not located: 

 Petrolisthes species. Schmitt, 1939, pp. 25, 26. 



Isla Narborough and Isla Albemarle, Galapagos Islands. [Probably 

 Petrolisthes brachycarpus Siversten, P. galapagensis, new species, and/or 

 P. tonsorius, new species.] 



Pachycheles sp. undetermined. Steinbeck and Ricketts, 1941, p. 456. 



"Minute porcellanids from Pulmo Reef, associated with the red coral 

 crabs Trapezia^ [Perhaps Neopisosoma dohenyi, new species, which 

 reaches the mouth of the Gulf of California.] 



Petrolisthes sp., Glassell MSS. Steinbeck and Ricketts, 1941, p. 457. 

 "With gracilis at Port San Carlos (Sonora)." 



Undetermined porcellanids. Steinbeck and Ricketts, 1941, p. 458. 



"An indeterminable porcellanid juvenile was taken in a worm tube 

 at Cape San Lucas." [Polyonyx'i'\ 



"We took also an unnamed porcellanid with Mithrax, etc. at Pulmo 

 Reef." 



