2G4 PROCEEDINGS OF UNITED STATES NATIONAL MUSEUM. [1685. 



Helix (Pclygyra) uvulifera Sbuttleworth. 



Helix uvulifera Shuttlw., Beru. Mitth., 1852, p. 19i), Biiiuey, 1. c, i). 264-5. 

 Helix florulifera Reeve, Couch. Icon., Helix, No. 699. 



Habitat. — Florida Keys, Biuuey, Stearns, Jewett, Hemi)hill, and 

 others. 



This is a much more variable form than the preceding, both in abso- 

 lute size and in proportions ; a small variety from Sauibel Key, col- 

 lected by Hemphill, is less than half the size of ordinary specimens and 

 has a smaller umbilicus in proportion, but the variations of this species 

 are so numerous as to render it undesirable to apply names to them. 



Helix (Polygyra) Postelliana BlaDcl. 



Hdix PosieUimia Blaud (1858), Biuuey, 1. c, p. 268. 



Eahifat. — Sea islands of South Carolina, and Georgia, main land of 

 Georgia, Baldwin ; Florida, Binney ; Jacksonville, Stearns ; South Flor- 

 ida, Jewett. 



This species varies considerably in size like uvulifera, but its propor- 

 tions seem more constant. 



Helix (Polygyra) auriformis Blaud. 



Helix auriformis Bland (1858), Biuuey, 1. c, p. 265. 



Habitat — Georgia to Texas, Binney ; New Orleans, Hemphill; Indian 

 Territory, Stearns. 

 The last is a new locality for this species. 



Helix (Polygyra) avara Say. 



Polygyra avara Say (1818), Biuuey, 1. c, p. 268. 



Habitat. — Basin of the Saint John's Eiver, Florida, Eemington Land- 

 ing (Say); Jacksonville, Hemphill; bank of the river at Palatka, April 

 10th, Dall. 



This is a rare species. Those found by me were partly immature owing 

 to the early part of the season in which my visit was made ; the speci- 

 mens were found singly under chips or pieces of board on the river bank 

 in very wet x)laces. That it has been so rare in collections is due, prob- 

 ably, in part, to the fact that the shell hardly comes to maturity before 

 most visitors have left Florida and occupies situations where the rains 

 would wash dead shells into the river. Both animal and shell are very 

 dark colored. 



Helix (Polygyra) Jacksoiii Blaud. , 



Eelix Jacksotii Blaud (1866) ; Biuuey, 1. c, p. 275. 



Habitat— Indian Territory (Cherokee Nation) near Fort Gibson, and 

 Springfield, Mo., Binney, 1. c. ; Florida^ Bland, in Stearns's collection 

 now in United States National Museum. 



The latter locality is new and far removed from those previously pub- 

 lished. I do not know from whom Mr. Bland got it. 



