Binney on Terrestrial Mollusks. 65 



"While naming this species after my friend Mr. Edwards, who 

 collected it, I am quite aware of the objections to such specific 

 names, but in the Genus Helix it seems almost a hopeless case to 

 find, for a shell closely allied to several others, an unpreoccuj)ied 

 name derived from any distinct specific character. 



This is Bland's description. I have also given fac-sim- 

 iles of his figures. 



HELIX SPINOSA Lea vol. ii. p. 154, pi. xliv. fig. 1. 



Helix spinosa DeKay, N. Y. Moll. p. 47. 

 Pfeiffek, 1. c. iii. 126. 



Chemnitz, ed. 2, i. 375, pi. Ixv. figs. 15-17, (1849). 

 Eeeve, Con. Icon. No. 685, (1852). 



HELIX EDGARIANA Lea vol. ii. p. 155, pl. xliv. fig. 2. 



Caracolla Edgariana Troschel, Arch. f. Nat. 1843, 2, p. 124. 

 Helix Edgariana Pfeiffer, Mon. Hel. Viv. i. 425 ; iii. 126. 

 Keeve, Con. Icon. No. 703. 



I have specimens of this species from Tennessee (El- 

 liott), Waschita Springs, Arkansas (Binney coll.), and Ala- 

 bama, (ditto). 



HELIX MAXILLATA Gould vol. ii. p. 157, pl. xl. a, fig. 2. 



Helix maxillata Pfeiffek, Mon. Hel. Viv. iii. 126. 



The impressions of this plate are printed from two sep- 

 arate copper plates. On one of them, the enlarged view 

 of the aperture of this species is misplaced. 



It has also been detected by Dr. H. M. Neisler along 

 the Cattahoochee River in Georgia. 



HELIX CONCAVA Say vol. ii. p. 163, pl. xxi. 



Helix concava Say, ( Binney 's ed.) p. 20. 



Helix planorboides Pfeiffer, Mon. Hel. Viv. iii. 156. 



Chemnitz, ed. 2, ii. 164, pl. xcv. fig. 17-19; cliv. fig. 45, 



(1851) 

 Reeve, Con. Icon. No. 674, (1862). 

 Deshayes, in Fer. 1. c. i. p. 87. 

 Helix dissidms Deshayes, 1. c. i. 97, pl. 84, figs. 1, 2, 



Pfeiffer, 1. c. iii. 84. 

 journal b. s. n. h. 9 



