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

Ordinary meeting: Saturday 26 January 2013

Type

Indoor meeting

at the Angela Marmont Centre, Natural History Museum

11:00: Exhibits and demonstrations

13:00: Lunch break

Organiser

Bas Payne

Organisation

Conchological Society

Council meeting and Ordinary meeting: Saturday 23 February 2013

Type

Indoor meeting

at the Angela Marmont Centre, Natural History Museum

(tba: Council meeting)

Organiser

Bas Payne

Organisation

Conchological Society

Ordinary meeting: Saturday 5 October 2013

Type

Indoor meeting

at the Angela Marmont Centre, Natural History Museum

11:00: Exhibits and demonstrations

13:00: Lunch break

Organiser

Bas Payne

Organisation

Conchological Society

Council meeting and Annual General Meeting: Saturday 20 April 2013

Type

Indoor meeting

at the Angela Marmont Centre, Natural History Museum.

(tba: Council meeting).

14:00: Annual General Meeting:

Organiser

Bas Payne

Organisation

Conchological Society

Rhinophores & tubercles of O. muricata & A. proxima. From Alder & Hancock, as Doris aspera & Doris proxima. On animals of equal length, there are more lamellae on rhinophore of A. proxima than on O. muricata.

Species

Adalaria proxima

Photographer / copyright holder

I.F. Smith

Adalaria proxima. Image from Alder & Hancock, as Doris aspera. Yellow form most frequent in southern Britain.

Species

Adalaria proxima

Photographer / copyright holder

I.F. Smith

Comparison of tops of peripheral tubercles. O. muricata: blunt broad rounded top, except smallest tubercles at mantle edge (Menai Strait). Adalaria proxima: narrow rounded point (Orkney).

Species

Onchidoris muricata

Photographer / copyright holder

I.F. Smith

Onchidoris muricata. Length 8mm. Ten oblique lamellae on rhinophore. Blunt-headed tubercles on mantle. Low water spring tide, Menai Strait, Wales. April 2011.

Species

Onchidoris muricata

Photographer / copyright holder

I.F. Smith

Onchidoris muricata. Length 8mm. Foot contracted, revealing underside of finely spiculose mantle, mouth and posterior edge of oral veil. Orange spheroid may be parasite. Low water spring tide, Menai Strait, Wales. April 2011.

Species

Onchidoris muricata

Photographer / copyright holder

I.F. Smith

Onchidoris muricata. Length 8mm. Sole yellowish white with spicules, translucent, showing tapered brown digestive gland and adjacent opaque white ovotestis. Yellowish oral veil. Anterior of foot rounded, not indented by mouth.

Species

Onchidoris muricata

Photographer / copyright holder

I.F. Smith