1893.] Mollusks of Louisiana. 951 
Triodopsis vultuosa Gould, found abundantly around Mt. 
Lebanon, and in many other localities. 
MESODON. 
Mesodon thyroides Say. Both the more typical thyroides and 
Gould’s variety bucculentus are abundant at many localities. 
Mesodon albolabris Say. Some specimens, though somewhat 
small, for thiş species seem best placed when referred to it. 
Not abundant. 
Mesodon divestus Gould. Grand Cane, La. These specimens 
do not fit anything else, and Mr. Harper, of Cincinnati, has so 
determined specimens sent him by Mr. Williamson. Since we 
are agreed independeutly, I feel safe in the identification. 
BULIMULUS. 
Bulimulus dealbatus Say, found by the thousands on the cal- 
careous prairies of Winn and Catahoula Parishes. Mr. Lewis 
collected it around Burk Place, Bienville Parish. 
PUPID.E. 
STROBILA. 
Strobila labyrinthica Say, abundant wherever there is damp 
ash. — 
PUPA. 
Pupa curvidens Gould, Mt. Lebanon, La., and near Bienville, 
also from river drift at Alexandria. 
Pupa pentodon Say, river drift at Aleriadna 
Pupa milium Gould, river drift at Alexandria. 
Pupa sp. Calcareous prairie lands, Winn Parish, La. 
Pupa fallax Say, found in nearly every portion of the sec- 
tion. Often very abundant. 
Pupa armifera Say, throughout the section, but not so abund- 
ant as P. fallax. 
Pupa contracta Say, throughout the section. Abundant. 
Pupa procera Gould, rather abundant on the calcareous prai- 
rie lands of Winn Parish, found also in the Red River drift at 
Alexandria. 
64 
