24 Trivia monacha
Juvenile.
1: anterior inhalent siphon.
2: fine grey/black particles coalesce to form spots grouped into dark discs.
3: double series of lateral folds (resembles bipectinate ctenidium) of yellow comb-like osphradium (for testing water quality), indistinctly visible in mantle cavity through juvenile shell.
4: long yellow ctenidium in mantle cavity visible through juvenile shell, unipectinate but too indistinct for lamellae to be distinguished.
Shell length 9.3 mm. Anglesey, Wales, September 2015. Leg. J. Light.
Full SPECIES DESCRIPTION: flic.kr/p/CGERbH
Sets of OTHER SPECIES:
www.flickr.com/photos/56388191@N08/collections/
24 Trivia monacha
Juvenile.
1: anterior inhalent siphon.
2: fine grey/black particles coalesce to form spots grouped into dark discs.
3: double series of lateral folds (resembles bipectinate ctenidium) of yellow comb-like osphradium (for testing water quality), indistinctly visible in mantle cavity through juvenile shell.
4: long yellow ctenidium in mantle cavity visible through juvenile shell, unipectinate but too indistinct for lamellae to be distinguished.
Shell length 9.3 mm. Anglesey, Wales, September 2015. Leg. J. Light.
Full SPECIES DESCRIPTION: flic.kr/p/CGERbH
Sets of OTHER SPECIES:
www.flickr.com/photos/56388191@N08/collections/