200 LAXD AND FRESH-WATER SHELLS OF N. A. [PART IV. 



from all other species in the numerous, longitudinal and transverse, 

 elevated lines, with the exception of the catenaria (nobis), than which 

 it is of a much more elongated and attenuated form. — Say. 



I have not been able to procure a specimen of this shell. 

 Does \t=^curvicostata, Anthony? 



80. G. circincta, Lea. 



Melania circincta, Lea, Philos. Proc, ii, p. 15, Feb., 1811. Pliilos. Trans., viii, 

 p.lS7, t. 6, f. 51. Obs., iii, p. 25. DeKay, Moll., JST. Y., p. 99. TiioosT, Cat. 

 Shells, Tenn. Wheatlev, Cat. Shells, U. S., p. 24. Catlow, Conch. Xomenc, 

 p. 186. I?i:oT, List, p. 31. Reeve, Monog. Melauia, sp. 289. 



Melania circinnata, Lea, Bixxey, Check List, No. 54. 



Juga circinnata, Lea, Chenu, Man. tie Conchyl., i, f. 2015. Adams, Genera, i, 

 p. 294. 



Description. — Shell striate above, tarreted, rather thin, pale yellow, 

 banded ; spire drawn out ; sutures small ; whorls nine, slightly con- 

 vex, carinate in the middle ; aperture rather small, ellip- 



Fig. 392. 



tical, angular at the base, and white within. 



Habitat. — Tennessee. 

 Diameter, -35; length, -90 of an inch. 

 Observations. — This beautiful species is peculiar for its 

 pale yellow ground and broad band, Avhich is placed 

 immediately upon the carina. A very indistinct band 

 may be observed below the carina, where in some indi- 

 viduals may also be observed a few striae. In some, the striae on the 

 superior part of the shell are accompanied by indistinct ribs. — Lea. 



Except in the development of the carina, and in being 

 longer, this species resembles G. laqtieata, Say. 



81. G. athleta, Anthony. 



Melania athleta, Anthonv, Ann. Lvc. Nat. Hist. N. Y., vi, p. S3, t. 2, f. 1, March, 



18J4. Binney, Check List No. 23. Brot, List, p. 34. Reeve, Monog. Mel., 



sp.258. 

 Melania glauca, ANTHONY, Proc. Acad. Nat. Sci., p. 57, Feb., 1860. Binney, Check 



List, No. 125. Brot, List, p. 35. Reeve, Monog. Melania, sp. 389. 

 Goniobasis Lyonii, Lea, Proc. Acad. Nat. Sci., p. 260. Jour. Acad. Nat. Sci., v, pt. 



3, p. 313, t. 37, f. 156, March, 1863. Obs., ix, p. 135. 



Description. — Shell conical, nearly smooth, darlc liorn-color; spire 

 much elevated ; whorls ten, nearly flat, with faint, longitudinal ribs, 

 most distinct on the upper part of tiie whorls ; sutures well marlicd; 



