PART 1 



GARTH : PACIFIC OXYRHYNCHA 



277 



6. Chelae of Pelia males. A. P. tumida {Velero III Sta. 1230-41), x 4. B. P. 

 pacifica {Velero III Sta. 465-35, Playa Blanca, Costa Rica), x 12.5. C. P. 

 pacifica {Velero III Sta. 847-38, Zorritos, Peru), x 9. 



A character omitted in A. Milne Edwards's figure, which is oversim- 

 plified, is a tiny white papilla on the eyestalk, which is visible in dorsal 

 view. This is not, however, a specific character, being shared by Pelia 

 tumida and perhaps by other members of the genus. 



The confusion which has existed regarding the Pacific species of 

 Pelia, quite apart from the identity of P. pulchella, discussed elsewhere, 

 is only partially clarified by the synonymy given above. This arose from 

 two independent circumstances, the first of which was the unfortunate 

 grouping by Rathbun (1893a) of material from San Diego and Santa 

 Catalina Island, California, with A. Milne Edwards's Panamanian 

 species, rather than with Lockington's San Diego species; and her subse- 

 quent (1907) erection of a new species, P. clausa, for southern Cali- 

 fornia material, after coming into possession of specimens from Perico 

 Point, Panama, which she correctly assigned to P. pacifica. The second 

 concerns specimens from Magdalena Bay, Lower California, Albatross 

 stations 2831 and 2989, also referred by Rathbun (1898, 1907) to P. 

 Pacifica. These, along with the southern California specimens previously 

 mentioned, were not correctly placed as P. tumida until 1925. 



