The Conchological Society of Great Britain and Ireland | Helping to understand, identify, record, and conserve molluscs

Juvenile Facelina bostoniensis. Length 5mm. Interior white cnidosac at tip with small patch of white surface pigment. No other white pigment splashes on cerata. No iridescence. Eyes behind rhinophores. Mersey Estuary. September 2010.

Species

Facelina bostoniensis

Photographer / copyright holder

I.F. Smith

Eubranchus farrani. Length 6mm. Posterior extends far beyond cerata. Orange surface pigment. Cerata smooth, changeable, but always at least moderately inflated. LWS, Menai Strait, Wales. August 2010.

Species

Amphorina farrani (Alder & Hancock, 1844)

Photographer / copyright holder

I.F. Smith

Eubranchus farrani. Length 6mm. Much of of the dorsum exposed. Rhinophores and oral tentacles distally or entirely orange. Eyes set back from rhinophores. LWS, Menai Strait, Wales. August 2010.

Species

Amphorina farrani (Alder & Hancock, 1844)

Photographer / copyright holder

I.F. Smith

Doto coronata. Length 7mm. Lateral quadrangular head flaps extended, don't mistake for propodial expansion. Mantle edge raised near rhinophores; don’t mistake for head crests. On Dynamena on Fucus serratus. LWS, Menai Strait, Wales. March 2010.

Species

Photographer / copyright holder

I.F. Smith

Doto coronata spawn mass, 5mm across, on flat surface. Convoluted white band, apparently with accompanying line of mucus, perhaps to secure the mass. LWS, Menai Strait, Wales. February 2010.

Species

Photographer / copyright holder

I.F. Smith

Doto coronata. Length 7.5mm. Lines indicate: a) head crest (raised rib) in front of right rhinophore and b) the left edge of the mantle. LWS, Mersey Estuary, January 2011.

Species

Photographer / copyright holder

I.F. Smith

Doto coronata. Length 7mm with red juvenile to left. Internally, adult’s cerata have orange digestive gland, scarlet spheroids and white granular bodies. Dilated rhinophore sheaths. LWS, Mersey Estuary, January 2011.

Species

Photographer / copyright holder

I.F. Smith

Doto coronata. Length 10mm. Crimson surface pigment extending between cerata from dorsum onto flanks. 9 cerata each side (usual max. 8) and 6 rings of tubercles (usual max. 4) on some cerata. Black-red spheroids in tubercles. Orkney, April 1977.

Species

Photographer / copyright holder

I.F. Smith

Doto coronata. Length 7.5mm. Dorsal crest (raised rib) from rhinophore to front of head is inconspicuous in this instance, but often visible. Translucent rhinophores and dilated sheaths have a few white pigment marks. LWS, Mersey Estuary, January 2011.

Species

Photographer / copyright holder

I.F. Smith

Doto coronata. Largest 7.5mm long. Juveniles have little or no surface pigment and weakly developed internal red spheroids. Colour of digestive gland in cerata reflects diet. LWS, Mersey Estuary, January 2011.

Species

Photographer / copyright holder

I.F. Smith