Neotype: NHM 188.8.131.52.10
Type locality: Mazatlan, Mexico, Gulf of California, eastern Pacific, North Pacific Ocean.
Echinoglycus perspectiva (L. Agassiz, 1841) (unaccepted combination)
Eastern Pacific, from Mexico to Panama (not Ecuador or the Galapagos Islands).
In Panama this species was collected by A. H. Clark (1946) on Playa Grande at low tide, on San Jose Island, Las Perlas Archipelago, eastern Pacific. I have collected a single specimen of this species from the same location (see images), but have not found it at any other location in Panama.