53 
Genus — Defkaxcia. 
D. Leufroyi (Michaud). 
One much worn specimen, Berwick Bay. 
D. linearis (Mont). 
A few specimens dredged at a depth of about 17 fathoms oil 
Cullercoats. One specimen from shell sand, N ewbiggin-by-the- Sea. 
Family — Bullid.k. 
Genus — Cylichna. 
C. cylindracea (Penn). 
Several small specimens dredged at a depth of about 17 fathoms 
off Cullercoats. 
F amily — B ullid.k. 
Philene sea bra (Midler). Bulhea pcctinata of Alder. 
One live specimen, 10 fathoms, oil Cullercoats. 
