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BIBLIOGRAPHY OP 



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Limas: campestris Binney. 



marmorata De Kay. 



tunicata Gould. 

 L. agrestis Linn. 

 Helix albilabris Say. 



alternata Say. 



arborea Say. 



chersina Say. 



cellaria Miiller. 



electrina Gould. 



fraterna Say. 



fuliginosa Griffiths. 



gularis Say. 



hirsuta Say. 



indentata Say. 



lineata Say. 



labyrinthica Say. 



minuscula Binney. 



Trumbulli Linsley. 

 (With a description.) 

 Margarita arctica? Eds. 



monodon Rackett. 



pulchella Mailer. 



Sayii Binney. 



suppressa Say. 



striatella Anthony. 



subglobosa? Binney. 



tridentata Say. 

 upa contracta Say. 



corticaria Say. 



pentodon Say. 



exigua Say. 



fallax Say. 



Cyclostoma marginata S. 



Gouldii Binney. 



milium Gould. 



modesta Say. 



ovata Say. 



simplex Gould. 

 Bulinus lubricus Brug. 

 Succinea avara Say. 



campestris Say. 



ovalis Say. 

 Auricula bidentata Say. 



denticulata Mont. 



281 



Cyclostoma lapidaria Say. 



231 



Planorbis armigerus Say. 



281 



bicarinatus Say. 



281 



campanulatus Say. 



281 



deflectus Say. 



2,82 



dilatatus Gould. 



282 



elevatus Adams. 



282 



exacutus Say. 



282 



hirsutus Gould. 



282 



lentus Say. 



282 



obliquus De Kay. 



282 



parvus Say. 



282 



trivolvis Say. 



282 



Physa aurea Lea = 





heterostropha var. 



282 



elongata Say. 





P. hypnorum Linn. 



282 



heterostropha Say. 



282 



Sayi Tappan = 





ancillaria var. 



282 



Lymnaea caperata Say. 





L. umbilicata Adams. 



282 



chalybea Gould. 



282 



colum.ella Say. 



282 



decollata Mighels. 



282 



desidiosa Say. 



282 



elodes Say. 



282 



emarginata Say. 



282 



Linsleyi De Kay. 





(With a description). 



282 



EQacrostoma Say. 



283 



modicellus Say. 





L. humilis Hald. 



283 



Valvata pupoidea Gould. 



283 



tricarinata Say. 



283 



unicarinata De Kay. 



283 



Paludina decisa Say. 



283 



integra Say. 





P. microstoma Kirtland. 



283 



lustrica? Say. 





Amnicola Gould. 



283 



Amnio ola Cincinnatensis 



283 



grana Say. [Anthony. 



283 



porata Say. 



283 



pallida Raid. 



