HABS I. JOHNSON 



For Terms See Fourth Page of Cover. 



. , _^ "^llt^U I, 



MONOGRAPH 



TERRESTRIAL MOLLUSCA 



INHABrriNG THE 



rjIsriTED STATES. 



Vf^UA lUuatrationa of all the Species, 



BY GEORGE W. TRYON, JR., 



Editor of The Amertcaa Journal of Conchology ; Xember of the Academy of Ifataral Scluncoa 



of Philadelphia; CorrespoDding Member of the Boston Society of Nataral History, 



the Lyceum of Nataral History of New York, the California Academy 



of Nataral Sciences, the Zoologiachea-botaniacheu 



Oesellschaft in Wiea, etc. 



I'art 



PHILADELPHIA : 



Published by the Author, 635 Mabket Street, 

 new york: london:- 



RATLLtBRK Bhothers No. 320 Broadway. Trubner & Co., No. 60 Paternoster Row. 



rAEIS MADRID : 



J B Baillixbe bt Fils, Rue HautefeniUe. C. Baillt-B^iIiLibre, Oalle del Principe. 



BERLIN : 

 AsHKR & Co., No. 20 Uater d. Linden, 



