312 PROCEEDINGS OF THE ACADEMY OP 



No. 216. Brot, List, p. 33. Catlow, Conch. Nomenc., p. 188. DeKay 



Moll. N. Y., p. 98. Reeve, Monog. Melania, sp. 403, 

 Melania incrassata, Anthony, Ann. Lye. N. Y., vi. p. 99, t. 2. f. 17, March, 



1854. Binney, Check List, No. 144. Brot. List, p. 34. 

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



' Acad. Nat. Sci., v. pt. 3, p. 270, t. 36, f. 80. Obs. ix. p. 92. 

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



Nat. Sci., v. pt. 3, p. 270, t. 36, f. 81. Obs., ix. p. 92. 



26. P. tor turn, Lea. 



Trypanostoma tortum, Lea, Proc. Acad. Nat. Sci., p. 174, 1862. Jour. Acad. 

 Nat. Sci., v. pt. 3, p. 27.5, t. 36, f. 89. Obs., ix. p. 97. 



27. P. dignum, Lea. 



Trypanostoma dignum, Lea, Proc. Acad. Nat. Sci., p. 273, 1862. Jour. Acad. 

 Nat. Sci., v.'pt. 3, p. 350, t. 39, f. 219. Obs., ix. p. 172. 



D. Carinate, striate Pleurocerce* 



28. P. bicostatum, Anthony. 



Melania bicostata, Anthony, Proc. Acad. Nat. Sci., p. 56, February, 1860. 



Binney, Check List, No. 33. Brot. List, p. 30. Reeve, Monog. Melania, 



sp. 246. 

 Melania rigida* Anthony, Proc. Acad. Nat. Sci., p. 62, February, 1860. 



Binney, Check List, No. 229. Reeve, Monog. Melania, sp. 270. 



29. P. s ubu 1 are, Lea. 



Melania subularis, Lea, Philos. Trans., iv. p. 100, t. 15, f. 30. Obs., i. p. 

 110, t. 15, f. 30. Ravenel, Cat., p. 11. DeKay, Moll. N. Y., p. 92, t. 

 7, f. 138. Wheatley, Cat. Shells U. S., p. 27. Jay, Cat., 4th Edit., 

 p. 275. Binney, Check List, No. 257. Brot, List, p. 35. Reeve, 

 Monog. Melania, sp. 428. Whiteaves, Canad. Naturalist, viii. p. 102, 

 April, 1863. 



30. P. subulse forme, Lea. 



Trypanostoma subulwforme, Lea, Proc. Acad. Nat. Sci., p. 174, 1862. Jour. 

 Acad. Nat. Sci., v. pt. 3, p. 289, t. 36, f. 116. Obs., ix. p. 111. 



31. P. Henryanum,* Lea. 



Trypanostoma Henryanum, Lea, Proc. Acad. Nat. Sci., p. 272, 1862. Jour. 

 Acad. Nat. Sci., v. pt. 3, p. 351, t. 39, f. 222. Obs., ix. p. 173. 



32. P. Lewisii,t Lea. 



Trypanostoma Lewisli, Lea, Proc. Acad. Nat. Sci., p. 172,1862. Jour. Acad. 

 Nat. Sci., v. pt. 3, p. 292, t. 36, f. 120. Obs., ix. p. 114. 



33. P. annu life r u in, Conrad. 



Melania anmdifera, Conrad, New Fresh Water Shells, p. 51, t. 8, f. 2, 1834. 

 Jay, Cat., 4th Edit., p. 272. Binney, Check List, No. 17. DeKay, 

 Moll. N. Y., p. 94. Wheatley, Cat. Shells U. S., p. 24. Brot. List, p. 

 30. Catlow, Conch. Nomenc, p. 185. Reeve,* Monog. Melania, sp. 308. 



Melania annulata, Conrad, Jay, Cat., 2d Edit., p. 455. 



Melania Ordiana, Lea, Philos. Proc, ii. p. 242, Dec, 1842. Philos. Trans, 

 ix. p. 26. Obs., iv. p. 26. Wheatley, Cat. Shells U. S., p. 26. Bin- 

 ney, Check List, No. 191. Brot, List, p. 30. 



34. P. Brumbyi, Lea. 



Melania Brumbyi, Lea, Philos. Trans., x. p. 298, t. 30, f. 5. Obs., v. p. 



* Juvenile shell, 



+ Probably the young of subulieforme. 



J This may only be a striate form of elevatum, Say. 



9 Mr. iveeve's figure represents the variety described by Mr. Lea as Md. Ordiana. 



[Nov. 



