Article: The echinoid genus Salenia in the eastern Pacific

The three occurrences of the stirodont echinoid Salenia Gray 1835 which Durham and Allison reported from the eastern Pacific in 1960 are described. A single, fragmentary specimen from the Aptian-Albian Alisitos formation of Baja California, Mexico, is tentatively referred to S. mexicana Schluter of the Mexican and Texas middle Cretaceous. Numerous specimens from the lower Oligocene Keasey formation of northwestern Oregon are described as S. schencki sp. nov. S. scrippsae sp. nov. is based on living specimens dredged from depths between about 200 and 350 metres on an unnamed guyot (Station 73, S10 58-42; lat. 25° 44' S., long. 85° 25' W.) near the south-west end of Nasca Ridge, off the coast of Chile.