28 PROCEEDINGS OP THE ACADEMY OP 



25. G. substricta, Haldeman.* 



Melania substricta, Haldeman, Monog. Limniades, vii. p. 4 of cover, Jany., 

 1844. Wheatley, Cat. Shells U. S., p. 27. Binney, Check List, No. 

 256. Brot, List, p. 36. 



26. G. aequali s, Haldeman. f 



Melania (tgnalis, Haldeman, Monog. Limniades, No. 4, p. 3 of cover, Oct. 5, 

 1841. Jay, Cat , 4th ed., p. 272. Binney, Check List, No. 7. 



27. G. semigradata, Reeve. 



Malania semigradata, Reeve, Monog. Melania, sp. 472, May, 1861. Brot, 

 List, p. 33. 



28. G. carino c ost at a, J Lea. 



Melania earinocostata, Lea, Philos. Proc, iv. p. 165, 1845. Philos. Trans., 



x. p. 62, t. 9, f. 40. Obs. iv. p. 62. Binney, Check List, No. 49. Brot, 



List, p. 35, Reeve, Monog. Melania, sp. 333. 

 Goniobasis slrenua, Lea, Proc. Acad. Nat. Sci., p. 267, 1862. Jour. Acad. 



Nat. Sci., v. pt. 3, p. 316, t. 37, f. 161, March, 1863. Obs. ix. p. 138. 

 Goniobasis Leidyana, Lea, Proc. Acad. Nat. Sci., p. 268, 1862. Jour. 



Acad. Nat. Sci., v. pt. 3, p. 322, t. 38, f. 173, March, 1863. Obs. ix. 



p. 144. 

 Melania scabrella, Anthony, Reeve, Monog. Melania, sp. 388. 

 Melania scabriuscula, Brot, List, p. 36. 



29. G. Lecontiana, Lea. 



Melania Lecontiana, Lea, Philos. Proc, ii. p. 13, Feb. 1841. Philos. Trans., 

 viii. p. 177, t. 5, f. 29. Dekay, Moll. N. York, p. 96. Wheatley, Cat. 

 Shells U. S., p. 26. Brot, List, p. 35. Jay, Cat., 4th edit., p. 274. 

 Binney, Check List, No. 160. Catlow, Conch. Nomenc, p. 187. 



Melasma Lecontiana, Lea, Chenu, Man. Conchy 1., i. f. 2002. 



30. G. cadu s, Lea. || 



Goniobasis cadus, Lea, Proc. Acad. Nat. Sci., p. 272, 1S62. Jour. Acad. 

 Nat. Sci., v. pt. 3, p. 345, t. 38, f. 211, March, 1863. Obs. ix. p. 167. 



31. G. o b t u s a, Lea.ir 



Melania obtusa, Lea, Philos. Proc, ii. p. 13, Feb., 1841. Philos. Trans., 

 viii. p. 176, t. 5, f. 28. Obs. iii. p. 14. Dekay, Moll. New York, p. 

 96. Binney, Check List, No. 183. Troost, Cat. Shells Tennessee. 

 Wheatley, Cat. Shells U. S., p. 26. Catlow, Conch. Nomenc, p. 188. 

 Brot, List, p. 59. 



32. G. amoena, Lea. 



Goniobasis amazna, Lea, Proc. Acad. Nat. Sci., p. 268, 1862. Jour. Acad. 

 Nat. Sci., v. pt. 3, p. 323, t. 38, f. 175, March, 1863. Obs. ix. p. 145, 

 t. 38, f. 175. 



33. G. Tuomeyi, Lea. 



Goniobasis Tuomeyi, Lea, Proc. Acad. Nat. Sci., p. 266, 1862. Jour. Acad. 

 Nat. Sci., v. pt. 3, p. 311, t. 37, f. 153, March, 1863. Obs. ix. p. 133. 



* Somewhat like gracilis, Lea, but is a stouter, more ponderous species. 



f Allied to earinocostata. Lea, but in that species the plicae are terminated by an acute angle 

 or rib on the body whorl and the spire is angled or carinate. 



% A very variable species. The M. scabrella of Anthony is a half-grown shell ; in which state 

 the plicae and carinas are more dibtinct than in the adult form. Scabrella being preoccupied by 

 an European author, M. Brot changed the name to scabriuscula. 



\ Mr. Reeve's fissure 404 does not represent this species ; it is nearer to decorata, Anthony. TLis 

 shell is closely allied to earinocostata and squalis. 



|| Allied to G. obtusa, but appears to differ in not being so closely plicate as that species. It 

 may possibly = Lecontiana. 



1 Is this the young shell of cadus or earinocostata t 



[Feb. 



