Edmund S. Hobson’s scientific contributions

A new member of the "hancocki" species complex, Acanthemblemaria castroi, is described from the Galapagos Islands. A new species, Coralliozetus springeri, is described from the Pacific coast of Panama, forming a geminate pair with C. cardonae from the Caribbean Sea. The description of the latter species is supplemented as is that of Chaenopsis schmitti Böhlke. The ranges of three species are extended: Coralliozetus boehlkei Stephens to Cocos Island, Coralliozetus angelica (Böhlke and Mead) to Socorro Island, the Revillagigedos, and Acanthemblemaria balanorum Brock to Bahia Piñas, Panama. Meristic variation with latitude, size reduction in the Cocos Island population, and reproductive behavior are described for Acanthemblemaria macrospilus Brock.