SHEPPARD AND STATHER : GLACIAL DRIFTS OF HOLDERNESS. 175 
for the faciJities they have given us in our work, Mr. G. Sheppard 
for assistance in collecting, Mr. R. Bullen Newton for identifying 
some of the shells, and Mr. J. T. Dyson for the photographs. 
Appendix. 
List of Shells, etc., from the New Section in the 
HOLDERNESS GrAVELS. 
Terehratulinacaput-serpentis. 
Balanus crenatus, Brug. 
Anomia ephivpium, L. 
Astarte borealis, Chemn. 
Astarte compressa, Mont. 
Cardium edule, L. 
Corhicula fluminalis, Miiller. 
Cyprina Islandica, Lam. 
Cytherea chione, L. 
Donax vittatus, Da C. 
Mactra solida, L. 
Mactra subtruncata, Da C. 
My a arenaria, L. 
Mya truncata, L. 
Mytilus edidis, L. 
Nucula nucleus, L. 
Ostrea edulis, L. 
Pecten Islandicus, Miiller. 
Pholas crispata, L. 
Saxicava arctica, L. 
Scrobicidaria plana, Da C. 
Tellina Balthica, L. 
Tellina obliqua, J. Sow. 
Venus gallina, L. 
Dentalium entalis, L. 
Buccinum widatum, L. 
Hydrobia ulvce. Pen. 
