CASH: FOSSIL MOLLUSOA. 
81 
Limnea 
Succinea 
Limax 
Bulimus 
Zomtes ( = Helicella) 
Helix ... 
Cochlicopa ( = Zua) 
Clausilia 
Achatina 
Pupa ... 
Vertigo 
Carychium 
Acme ... 
GENERA OF YORKSHIRE 
Pholas... 
Teredo 
Gastrochcena 
Saxicava 
Solemya 
Mya ... 
Corbula 
Anatina 
Pleuromya 
Arcomya 
Ceromya 
Thracia 
Pholadomya 
Cardiomorpha ... 
Goniomya 
Myacites 
Homomya 
Panopoea 
Gresslya 
Mactra 
Lutraria 
Sanguinolaria ... 
Sanguinolites (?) 
Tellina 
Donax 
Scrobicularia 
Venus 
Cytherea 
Pleistocene 
)j 
FOSSIL LAMELLIBRANCHIATA. 
Jurassic, Cretaceous, Pleistocene 
Cretaceous 
Jurassic 
,, Pleistocene 
Jurassic 
Cretaceous, Pleistocene 
Carboniferous, Jurassic, 
Cretaceous, Pleistocene 
J urassic 
5» 
>> 
,, Cretaceous, Pleistocene 
}> » 
Carboniferous, Permian 
Jurassic 
Carboniferous, Jurassic 
J urassic 
,, Cretaceous 
Jurassic 
Jurassic (?) Pleistocene 
Carboniferous (?) J arassic 
Jurassic 
Carboniferous * 
Jurassic, Pleietocene 
Pleistocene 
J' 
Jurassic, Pleistocene 
Jurassic 
