25. G. substricta, Haldeman.* 



Melania substricta, Haldeman, Monoer. 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. aequalis, Haldeman.f 



Melania tpqnalis, 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, Moneg. Melania, sp. 472, May, 1861. Brot, \ 

 List, p. 33. 



28. G. carinocostata,J Lea. 



Melania carinocostata, 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 strenua, 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 Ltiduana, Lea, Proc. Acad. Nat. Sci., p. 268, 1S62. 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. 

 Binuev, Check List, No. 160. Catlow, Conch. Nornenc., p. 187. 



Melasma Lecontiana, Lea. henu, Man. Conchyl., i. f. 2002. 



30. G. cadus, Lea.|( 



Goniobasis cadus, Lea, Proc. Acad. Nat. Sci., p. 272, 1862. Jour. Acad. 

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



31. G. obtnsa, Lea. IT 



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. a m o e n a. Lea. 



Goniobasis amcena, 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. T u om e y i, Lea. 



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

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



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



t Allied to carinocwtata, Lea, but in that species the plica axe terminated by an acute angle 

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



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

 the plicae and carinae are more distinct than in the adult form. ftmraBa being preoccupied by 

 an European author, M. Brot changed the name to scal>riuscula. 



% Mr. Koeve's figure 404 does not represent this species ; it is nearer to dccorata, Anthony. This 

 shell is closely allied to carinocostata and a>i/ 



ed toY;. obtufa, but appears to differ in not being so cloeely plicate as that species. It 

 may possibly zr Lecontiana. 



^ IB this the young shell of cadus or carinocostata f 



