163 
x Clavalithes cf. conjunctus Desh. 
X 
o 
o 
x 20 
UT 
x ?0 
O 
X 
x ?0 
x ?0 
X 
5:0 
X 
X 
Conomitra cf. Vincenti Coss. 
Conomitra sp. aff. fusellina Lam. 
Conomina cf. volutiformis Edw. 
Athleta (Volutospina) ambigua Sol. 
Athleta (Volutospina) nodosa Sow. 
Athleta (Volutospina) luctatrix Sol. 
Ancilla (Tortoliva) canalifera Lam. mut. Gardneri v. Koenen. 
Bathytoma ligata Edw. (? var.) 
Surcula inarata Sow. 
Pleurotoma (Hemipleurotoma) cf. gentilis Sow. 
Pleurotoma (Hemipleurotoma) plebeia Sow. 
Pleurotoma (Hemipleurotoma) conifera Edw. var. 
Drillia sp. aff. scabricula Edw. 
Bela (Daphnobela) cf. juncea Sol. 
The following however are considered as peculiar to the Lower 
Oligocene of Western Europe: 
X20 
X 
OKORKO < 
OOxXOoOOoOoomMoO Oooo. 
soo 
O 
Clavagella (Stirpulina) cf. Goldfussi Phil. 
Thracia scabra v. Koenen. 
Gobraeus (Psammotaena) cf. virgatus v. Koenen. 
Meretrix (Sinodia) incrassata Sow. 
Isocardia Eichwaldi Rom. aff. multicostata Nyst. 
Cardium (Protocardium) Aralense Abich aff. C. cingulatum 
Goldfuss. var. angustesulcatum v. Koenen. 
Crassatella cf. intermedia Nyst. 
Nuculana sp. aff. perovalis v. Koenen. 
Nuculana sp. aff. elata v. Koenen. 
Modiola cf. Nysti Kicks. 
Pecten (Chlamys) cf. pictus Goldfuss. var. microta v. 
Koenen. 
Ostrea cf. Quetelleti Nyst. 
Ostrea prona Wood var. 
Cerithioderma cf. alternans v. Koenen. 
Pyrula crassistria v. Koenen. 
Cassidaria tenuis v. Koenen. 
Streptochetus cf. elongatus Nyst. 
Fusus (? Aptyxis) cf. crassisculptus Beyr. 
Athleta (Volutospina) suturalis Nyst. 
Admete (Coptostoma) quadrata Sov. ? var. planinspira . 
v. Koenen. 
Admete (Bonellitia) sp. aff. simulata v. Koenen. 
Hemiconus cf. insculptus v. Koenen. 
Bathytoma cf. Hantoniensis Edw. 
Clavatula (? Trachelochetus) cf. semilaevis Phil. 
Pleurotona cf. Bosqueti Nyst. 
Scaphander cf. dilatatus Phil. 
In addition to the species mentioned above, a certain number 
of species 
will be noticed in the accompanying list, which are re- 
presented both in the Eocene and Lower Oligocene beds of We- 
stern Europe, viz: 
16) 
Pecten corneus Sow. 
