OF CONCHOLOGY. 129 



21. A. vittata, Xea. Fig, 107. Subglobose, smooth, tliick ; 

 spire obtuse, suture well impressed; whorls 4, inflated, the 

 last very large and very convex ; aperture small, nearly round, 

 columella much incurved. Yellowish, with several bands, 

 tinged with purple within. Coosa River, Ala. 



22. A. planospira, Anth. Fig. 108. Ovate or obovate, 

 smooth, thick ; spire nearly flat, suture slightly impressed ; 

 whorls 4, perfectly plane above, the last very large, obovate, 

 somewhat round-shouldered ; aperture rather long, narrow, 

 columella somewhat thickened. Light brown, with four bands. 

 Kentucky, Tenn. 



23. A. ampla, Anth. Figs. 109 — 114. Ovate-globose, 

 thick ; spire very short, eroded generally to a plane with the 

 body whorl, suture well impressed ; body whorl large, regu- 

 larly convex ; aperture large, oval, well rounded below. Light 

 yellowish-brown or greenish, sometimes impressly striate, 

 banded or maculate; white, vividly banded within. Coosa 

 River, Ala. 



Figs. 109 — 111 exhibit the types, Fig. 112 is elegam, Anth., and Figs. 

 110, 114 are formosa, Lea. The latter is impressly striate. 



24. A. zebra, Anth. Fig. 115. Oval, smooth, rather thick; 

 spire obtuse, not prominent, suture well impressed ; whorls 4, 

 convex, the last regularly oval ; aperture oval, rather long. 

 Yellowish, with longitudinal or diagonal zig-zag markings of 

 very dark brown or reddish, bluish- white within. Ala. 



25. A. pic ta, Con. Figs. 116 — 119. Eounded-ovate, rather 

 thick, smooth; spire entirely eroded, suture irregularly im- 

 pressed ; body whorl somewhat slopingly compressed above ; 

 aperture large, oval, broadly rounded below. Bright yellow, 

 with maculations either transversely disposed in bands or 

 diagonal zig-zag markings. 



Fig. 118 is Foremani, Lea, and Fig. 119 flammata, Lea. This species is 

 distinguished from zebra, Anth., by the superior portion of the whorls 

 being slopingly flattened. 



26. A. ornata, Anth. Fig. 120. Convex-conic, smooth, 

 moderately thick ; spire elevated, suture well impressed ; 

 whorls 5, convex, the last moderate in size, regularly rounded ; 

 aperture small, oval, well rounded below. Dark yellow, pol- 

 ished, witb three very distinct brown bands. N. Caroliria. 



27. A. Lewisii, Lea. Fig. 121. Elliptical, smooth, rather 

 thick ; spire obtuse, not advanced above the general curve of 

 the body -whorl, suture scarcely impressed; whorls 5, the last 

 large, oval; aperture long, narrow, ovate. Yellowish horn 

 color, not banded, whitish within. Tenii. 



