[Reprinted from the Annals of the Lycetim of Natural History, N. Y., Vol. xi, 
November, 1875.] 
XX. On the Genitalia, Jaw and Lingual Dentition of cer- 
tain species of Pulmonata. 
By W. G. BINNEY. 
[With a Note on the Classification of the Achatinella, by Thomas Bland. ] 
Read October 11, 1875. 
In the following pages I have not considered it necessary 
to offer a full description of the dentition in cases where a 
figure is given. In the Proceedings of the Academy of 
166 
