1: distinct brown or black spot inside white siphonal canal.
2: when periostracum worn away, pronounced labial varix is white, often with transverse reddish lines.
Dorset, England. April 2012.
1: distinct brown or black spot inside white siphonal canal.
2: when periostracum worn away, pronounced labial varix is white, often with transverse reddish lines.
Dorset, England. April 2012.