27 



43. P. Leaii, Tryon.* 



lo viridula, Lea, Proc. Acad. Nat. Sci., p. 394, 1861. Jonr. Aoad. Nat. Sci., 

 v. pt. 3, p. 349, t. 39, f. 218. Obs., ix. p. 171. 



44. P. fastigiatum, Anthony. 



Melania fastigiata, Anthony, Ann. N. Y. Lye., vi. p. 113, t. 3, f. 13, March, 

 1854. Binney, Check List, No. 108. Brot. List, p. 30. Reeve, Monog. 

 Melania, sp. 302. 



45. P. Tuomeyi, Lea. 



Trypanostoma Tuomeyi, Lea, Proc. Acad. Nat. Sci., p. 171, 1862. Jour. 

 Acad. Nat. Sci., v. pt. 3, p. 287, t. 36, f. 111. Obs., ix. p. 109. 



46. P. g r a c i 1 e, Lea, 



lo gracilis, Lea, Proc. Acad. Nat. Sci., p. 394, 1861. Jour. Acad. Nat. Sci., 

 v. pt. 3, p. 349, t. 39, f. 217. Obs., ix. p. 171. 



47. P. Spillmanii, Lea. 



Trypanostoma Spillmanii, Lea, Proc, Acad. Nat. Sci., p. 173, 1862. Jour. 

 Acad. Nat. Sci., v. pt. 3, p. 271, t. 36, f. 82. Obs., ix. p. 86. 



48. P. planogyrum, Anthony. 



Melania planogyra, Anthony, Ann. Lye. N. Y., vi. p. Ill, t. 3, f. 11, March, 

 1854. Binney, Check List, No. 207. Brot, List, p. 30. Reeve, Monog. 

 Melania, sp. 382. 



49. P. pyrenellum, Conrad. 



Melania pyrenella, Conrad, New Fresh Water Shells, p. 52, t. 8, f. 5, 1834. 

 DeKay, Moll. N. Y., p. 99. Wheatley, Cat. Shells U. S., p. 26. Bin- 

 ney, Check List, No. 226. Brot, List, p. 30. Reeve, Monog. Melania, 

 sp. 303. 



50. P. Conradi,f Tryon. 



51. P. regular e, Lea. 



Melania regularis, Lea, Philos. Proc., ii. p. 12, Feb., 1841. Philos. Trans., 

 viii. p. 170, t. 5, f 16. Obs., iii. p. 8. DeKay, Moll. N. Y., p. 94. 

 Higgins, Cat. Troost, Cat. Jay, Cat., 4th Edit., p. 274. Wheatley, 

 Cat. Shells U. S., p. 26. Binney, Check List, No. 227. Catlow, Conch. 

 Nomenc., p. 188. Brot, List, p. 30. 



Ceriphasia regularis, Lea, Chenu, Manuel, i. f. 1956. 



52. P. validum, Anthony. 



Melania ralida, Anthony, Proc. Acad. Nat. Sci., p. 59, Feb., 1860. Bin- 

 ney, Check List, No. 282. Brot, List, p. 33. Reeve, Monog. Melania, 

 sp. 317. 



G. Smooth species, not angulated. 



53. P. glandulum, Anthony. 



Melania glandula. Anthony, Proc. Acad. Nat. Sci., p. 60, Feb., 1860. Bin- 

 ney, Check List, No. 124. Brot, List, p. 39. Reeve, Monog. Melania, 

 sp. 393. 



Melania glans, Anthony, Ann. N. Y. Lye., vi. p. 123, t. 3, f. 23. March, 

 1354. 



54. P. Chris tyi,t Lea. 



* The name viridula being preoccupied by Mr. Anthony, I gladly avail myself of the opportu- 

 nity to dedicate this species to a gentleman who. by his immense labors pursued during a period 

 of nearly forty years, with their splendid results, has done more for the science of Conchology, than 

 any other American Naturalist. 



f This name is proposed for a long slender gpecies, with flattened whorls and brown color, which 

 Mr. Anthony has extensively distributed as pyrenettum, Conrad. Mr. Lea has regarded it as 

 doubtfully identical with his elongatum. 



t Distinguished from labiatum principally by its more ponderous, flattened volutions. 



