Rissoa parva. t: tentacle with white line. b: dark band on foot. o: dark opercular lobe. p: pallial tentacle. y: yellow patch behind eye. g: groove. c: brown comma across varix. v: white labial varix. Smooth shelled form. LWS Menai Strait, Wales. Aug.2010
Rissoa parva. t: tentacle with white line. b: dark band on foot. o: dark opercular lobe. p: pallial tentacle. y: yellow patch behind eye. g: groove. c: brown comma across varix. v: white labial varix. Smooth shelled form. LWS Menai Strait, Wales. Aug.2010
Rissoa parva. t: tentacle with white line. b: dark band on foot. o: dark opercular lobe. p: pallial tentacle. y: yellow patch behind eye. g: groove. c: brown comma across varix. v: white labial varix. Smooth shelled form. LWS Menai Strait, Wales. Aug.2010
