

450 NOTES ON INDIAN TERRITORY SHELLS. 



several hundred specimens, I hare found none which approach the 

 type, and 1 would therefore propose for it the varietal numeofdeltoidea 



Helix Polygyra) dorfeuilliana Lea. 



Fort Gibson; Limestone Gap; Eufaula. Abundant and variable in I 

 size. 

 Helix ^Polygyrat triodontoides Bland. 



A tew dead specimens were found at Eufaula and near Kiowa. This 

 species seems to me like a somewhat elevated and thinner form of P.. 

 texasiana. 



Helix (Polygyra) texasiana Moricand. 



Two or three dead and bieached shells were found near Eufaula. 



Helix (Polygyra) leporina Gould. 



Fort Gibson; Eufaula; Limestone Gap. Not abundant. Some of the | 

 specimens of this species strikingly resemble the Stenotremas, and 1 

 have received specimens from Texas, from an excellent American conj 

 chologist, labeled "Stenotrema hirsuta, small variety." 

 Helix (Stenotrema) monodon Rackett. 



Rather plentiful near Limestone Gap and Eufaula. A form of this 

 was found at the former place with spire greatly elevated, resembling 

 S. edwardsi. 



Helix (Stenotrema) stenotrema Ferussac. 



Fort Gibson. 

 Helix (Mesodon) albolabris Say. 



Fort Gibson ; Limestone Gap. 

 Helix (Mesodon) elevata Say. 



Near Fort Gibson. 

 Helix (Mesodon) thyroides Say. 



Near Fort Gibson. The form H. bucculenta, with mauy variations, 

 was found with the type. Some of these with a parietal tooth and| 

 others without; a number of them very closely approaching Mesodon j 

 clausa in size and appearance. 

 Helix (Mesodon) divesta Gould. 



A few specimens at Fort Gibson. Abundant, mostly dead, near Eu-J 

 faula and at Limestone Gap. Quite variable in size, ranging fromii 

 15 mnJ to 20""" in diameter. 

 Helix (Mesodon) kiowaensis n. s. 



Shell umbilicated, orbicularly depressed, solid, dark-brown in color: 

 whorls 5, with numerous rather coarse striae, and tine revolving in 

 pressed lines, which are much more conspicuous on the last whorl. Su 

 ture deeply impressed, leaving the whorls well rounded; aperture ob 

 lique, somewhat transversely rounded, forming fully three-fourths of i 

 circle; peristome thick and solid, white or purplish, evenly reflected 



