162 



PEOP. J. W. JtTDD ON THE OLIGOCENE 



Freshwater and Terrestrial MoUusca (continued). 



Bern- 

 bridge 

 group. 



Headon 

 group. 



conica, C. Prevost , 



Succinea sparnacensis, Lesh 



Tapada (Succinea) imperspicua, 8. Wood. . 



Limnsea longiscata, Brong 



, var 



fusiformis, 8ow 



pyramidalis, Desk 



coliunellaris, 8ow 



f abulum, Brong 



ovum?, Brong 



arenularia, Brard 



elongata, Marcel de Serres 



minima, Sow 



caudata, Edw 



sulcata, Edw 



gibbosula, Edw. 



mixta, Edw 



tumida, Edw 



convexa, Edw 



subquadrata, Edw 



costellata, Edw 



cincta, Edw 



angusta, Edw 



recta, Edw 



tenuis, Edw 



sublata, Edw 



Ancylus(?) latus, Edw 



Velletia elegans, Sow 



E'ematura(?) pupa, N^st 



parvula, Desk 



Planorbis discus, Edw , 



Sowerbyi, Brong 



rotundatus, Brard 



obtusus, Sow 



platystoma, S. Wood 



lens, Brong 



tropis, Edw 



hemistoma. Sow 



elegans, Edw. (P. Baudoni ?, Desk.)... 



biangularis ?, Edw 



Menetus (Planorbis) euomphalus, Sow. ... 



(Planorbis) goniobasis, Sandb 



Helisoma (Planorbis) oligyratum, Sow 



Paludina (Bythinia) globuloides, E. Forbes 



lenta. Sow 



concinna. Sow 



orbicularis, Sow 



lenta, var 



minuta. Sow 



angulosa. Sow 



Mitrula (Neritina) aperta, Sow 



Neritina concava, Sow 



tristis, Forbes 



