146. Shell almost cylindrical, pupa-shaped; small (%" or less); generally dis' 



tributed 147. 



Shell more tapering; becoming larger; southern states 148. 



147. Aperture about as high as wide; shell dull; one of the Pupillidae lacking 



teeth and with a thin lip 



Columella edentula (Drap.) Toothless Pupa 

 Aperture narrowed; shell shining 



Cionella luhrica (Miillcr) Brilliant Snail 

 (Cochlicopa luhrica (Miiller) ) 



148. Apex broken off; shell plain light colored 



Rumina decollata (Linn.) 

 Apex normally entire; shell usually, but not always, banded or streaked 

 with color 149. 



149. Body whorl inflated; aperture wide 150. 

 Body whorl and aperture more narrowed 151. 



150. Aperture about one-half as long as the shell 



Orthahcus reses (Say) Painted Florida Land Snail 

 (Oxystyla undata (Brug.) ) 

 Aperture less than one-half as long as the shell 



Liguus fasciatus (Miiller) Florida Tree Snail 

 (Achatina fasciata (Miiller) ) 



151. Small whorls of apex with minute upright and spiral lines crossing each 



other; aperture usually distinctly less than one-half the length of the 

 shell; about 1" high 



Drymaeus midtilineatus (Say) Many-lined Florida Land Snail 



Apex smooth, granulated, or vertically creased; aperture usually about 



one-half the length of the shell; often becoming larger — Giant Land 



Snails 152. 



152. Interior of aperture dark colored 



BuUmidus alternatus (Say) 

 Interior of aperture light colored 

 Bulimulus dealhatus (Say) 



153. Lip definitely reflected 154. 

 Not so 189. 



154. Minute shells with one or two ridges visible on the parietal wall parallel 



with the suture, and with several revolving ridges back within the 

 aperture; eastern and central states 

 Strohdops lahyrmthica (Say) 

 Not so 155. 



155. With the lip continuing across the parietal wall in a raised, entering, V' 



shaped callus, making the aperture more or less ear-shaped (Many 



species, of which a few common ones are given) Ear-mouthed Wood 



Snails 156. 



Not so 164. 



156. .Shell with about seven whorls coiled almost in one plane; umbilicus 



showing the volutions; about V2"; Florida 157. 



Not so 158. 



131 



