1. Cerithiopsis tubercularis. No snout. Small respiratory siphon, with reflected bifid tip showing black lining, in siphonal channel of shell. 3 spiral lines on base of shell (grey lines indicate). On fine red seaweed. Menai Strait, Wales, Aug. 2010.
2. Cerithiopsis tubercularis. No snout. Small respiratory siphon, with reflected bifid tip showing black lining, in siphonal channel of shell. 3 spiral lines on base of shell (grey lines indicate). On fine red seaweed. Menai Strait, Wales, Aug. 2010.

Cerithiopsis tubercularis. No snout. Small respiratory siphon, with reflected bifid tip showing black lining, in siphonal channel of shell. 3 spiral lines on base of shell (grey lines indicate). On fine red seaweed. Menai Strait, Wales, Aug. 2010.

Cerithiopsis tubercularis

© I.F. Smith

Cerithiopsis tubercularis

© I.F. Smith