186 
Ammonites Humphresianus—Sow. 
— Brocchii—Sow. 
— Braikenridgii—Sow. 
Gasteropoda. 
Chemnitzia Semanni— Oppel. 
Pleurotomaria fasciata—Sow. 
—— elongata—Sow. 
Turbo levigata. 
Conchifera. 
Ostrea flabelloides—Lamk. 
Hinnites tuberculosus—Goldf. 
Lima proboscidea—Sow. 
—— Etheridgii—Wr. 
—— nov. spec. ? 
Trichites undulatus—Lyc. 
Astarte excavata—Sow. 
Mytilus explanatus—Mor. 
Pholodomya Heraultii—Ag. 
Homomya crassiuscula—Lyc. 
Myoconcha crassa—Sow. 
Pteroperna plana. 
Trigonia costata—Sow. 
striata—Sow. 
Brachiopoda. 
Rhynchonella subtetrahedra. 
No. 3.—The Ostrea-bed, consists of a coare brown ferruginous 
sandy marl, interstratified with inconstant layers of ragstone. 
The fossils are most abundant in the sand. This bed is about 
one yard in thickness, and contains,— 
Conchifera. 
Ostrea flabelloides—Lamk. 
is » var. a 
by EVD Os 
a some WAT: C: 
pixiformis—WY. 0. sp. 
Pecten demissus—Goldf. 
Lima proboscidea—Sow. 
Etheridgii—Wr. 
Gresslya abducta—Phil ? 
Pleuromya tenuistriata—Ag. 
Pholodomya Heraultii—Ag. 
—— ovulum—Ag. 
—— media—Ag. 
—— Davalqui—Lyc. 
Monotis tenuistriata—WyY. n. sp. 
