no 



BIBLIOGRAPHY OF 



TECTIBRAIVCHIATA. 

 Bullidse. 



50 



Bulla hiemalis Couth. 



50 



50 



oryza Totten. 





50 



triticea Couth. 



50 





B. corticata Moll. 



51 



50 



canaliculata Say. 







B. obstricta Gould. 



51 



50 



pertenuis Mighels. 



51 



50 



incincta Mighels. 





50 



debilis Gould. 





50 



Gouldii Couth. 





52 



52 

 52 

 52 

 52 

 52 



52 



52 

 52 



52 



52 



52 

 52 



51 Actaeon puncto-striata St. \ 



51 Melampus corneus St. 



M. bidentatus Say. 

 Auricula cornea Desh. 



bidentata Gould. 



52 denticulatus Auct. 



Bulla solitaria Say. 



B. insculpta Tott. 

 puncto-striata M. et Ad. 

 Philine lineolata St. 



Bulla lineolata Couth. 

 sinuata St. (pi. i, fig. 7). 

 formosa St. 



P. quadrata P. et H. ? 

 scutulum Loven. ? 



Tornatella puncto-striata Ad. 



Valuta denticulata Mont. 

 Auricula denticulata Gld. 

 52 Carychium exiguum Gould. 

 Pupa exigua Say. 

 Bulimus exiguus Binney. 



PNEUM®BMAMCMIATA. 



liiiMsifeadae. 



Ancylus parallelus Hald. 

 A. rivularis Gould. 

 fuscus Adams. 

 tardus Say. 

 Limnasa appressa Say. 

 decollata Migh. et Ad. 

 catascopium Saij. 

 L. pingiiis Say. 

 emarginata Say. 

 ampla Migh. 

 megasoma Say. 

 . columella Say, 



L. macrostoma Say. 

 caperata Say. 



L. umbilicata Adams. 

 humilis Saij. 



L. modicellus Say. 

 pallida Adams. 

 desidiosa Say. 



52 Limnsea elodes Say. 



52 gracilis Jay. 



53 Physa heterostropha Say. 

 53 fragilis Migh. et Ad. 



53 ancillaria Say. 



53 gyrina Say. 



53 elongata Say. 



53 Planorbis trivolvis Say. 



53 lentus Say. 



53 bicarinatus Say. 



53 campanulatus Say, 



53 armigerus Say. 



53 hirsutus Gould. 



53 deflectus Say. 



53 exacutus Say. 



53 parvus Say. 



P. elevatus Adams. 



53 dilatatus Gould. 



P. lens Lea. 



