glandulosum

	site	site # (info)	collection date	kind	depth	substrate	salin	comments	reference
A	West flatt (Westwatt, Westwattes), Helgoland Island, Germany	664 map	Aug 1963	type locality		gravel sediment		museum specimen number: SMF 3102-3105; rock gully (felsrinnen)	Dorjes J (1968): 184; also biogeography and ecology on this and other German Bay species in (citation)- 78-115.
B	north flat (Nordwatt), Helgoland Island, Germany	661 map	Oct 1964			Polygordius shell			Dorjes J (1968): 184; also biogeography and ecology on this and other German Bay species in (citation)- 78-115.