51 
GASTEROPODA. 
F amily — Patellid/e . 
Genus — Tectura. 
T. virr/inea (Miiller). 
Very common in rock pools, at low water, Cullercoats. 
Family — CAPULiciE . 
Genus — Capulus. 
C. Hunyaricus (L.) 
Fine large specimens often thrown on the beach, Bamboro’. 
F amily — Tkochid^ . 
Genus — Trochus. 
T. helicinus (Fab). Margarita helicina of Alder. 
One specimen from shell sand, Newbiggin-by-the-Sea. 
Family — Eissoin^. 
Genus — Rissca. 
Fl. striata v. arctica (Adams). 
Alive under stones at low water, Cullercoats, common. One or 
two worn specimens dredged at a depth of about 17 fathoms off 
Cullercoats. 
R. reticulata (Mont). 
One worn specimen dredged at a depth of about 17 fathoms off 
Cullercoats. 
R. semistriata (Mont). 
One worn specimen dredged at a depth of about 17 fathoms off 
' Cullercoats. 
R. soLuta (Philippi). 
Two small fresh specimens dredged at a depth of about 39 fathoms, 
■some 16-17 miles off Souter Point, August, 1901. This, I think, has 
mot before been recorded for this coast. It certainly is not in 
Alder’s list. 
F amily — Scalariida5 . 
Genus — Scalaria. 
S. Trevehjana (Leach). 
One fine specimen, with a hermit crab inside it, dredged off Blyth. 
