semicircula

	site	site # (info)	collection date	kind	depth	substrate	salin	comments	reference
A	James, Archipielago de Colon (Galapagos Islands), Ecuador (Station VI, 1a)	455 map	December 1972			sand beach in front of ruins of the buildings of the former salt mines		few specimens.	Ehlers U, Sopott-Ehlers B (1989): 193
B	James, Archipielago de Colon (Galapagos Islands), Ecuador (Station VI, 1b)	339 map	December 1972	type locality	tidal	rocky		few specimens.	Ehlers U, Sopott-Ehlers B (1989): 193