135. 
136. 
Perse Z 
137. 
138. 
139. 
THE MOLLUSCA OF DORSETSHIRE. 37 
MURICIDA. 
TROPHON, Montfort, 1810, 
T. muricatus (Mont.) 
Weymouth, Damon. 
Ringstead Bay, W. Thompson. 
Kimmeridge Bay, dredged, J. C. M.-P. 
Fossil : Coraliine and Red Crags. 
[T. truncatus (Strdm.) 
A boreal shell, known only in the Pleistocene beds. 
Raised Beach, Portland, Z. R. Sykes.] 
OCINEBRA (Leach), Gray, 1847. 
0. erinacea (Z.) Murex erinaceus, L. 
Pulteney, p. 46, pl. 14, f. 7. 
Abundant around the coasts, ranging from a depth of 5 to 
30 fathoms. 
Fossil : Mammaliferous Crag; Raised Beach, Portland, 
Prestwich. 
0. aciculata (Zam.) Murex aciculatus, Zam. Murex 
corallinus, Scacchi. 
Weymouth, Damon. 
Fossil: Coralline Crag, Pliocene, Italy. 
CYPRAIDA. 
TRIVIA, Gray, 1832. 
T. europsea (Mont.) Cyprea europxa, Mont. 
C. pediculus, Penn. 
Pulteney, p. 42, pl. 22, f. 6. 
Generally distributed round the coast, ranging from low-water 
mark to 50 fathoms ; exceedingly common in Kimmeridge 
Bay, dredged (alive), J.C. M.-P. 
Var. minor, Mar. 
Weymouth, Damon. 
Fossil: Coralline and Red Crags, 
