18 Diodora graeca

18 Diodora graeca

1 part of white male-gonad under translucent mantle. 2 two thirds of male gonad removed. 3 translucent mantle over digestive gland. 4 digestive gland exposed. 5 siphon, lappets and dark edged collar of substantial mantle. 6 mantle over ctenidium.
Shell removed. Male. Length 17.5mm. W. Anglesey, Wales. March 2014.