AXCULOSA. 



387 



nished by Mr. Anthony, The largest one is from one of Ms 

 types. 



6. A. rubiginosa, Lea. 



AncuJosa rubiginosa. Lea, ii, p. 8.3, Oct., 1841. Philos. Trans., ix, p. 20. Obs., iv, 



p. 20. Bkox, JIal. Blatt, ii, p. Ill, July, 1810. 

 Anculotus rubiginosus, Lea, Jay, Cat., ith edit., p. 276. Reeve, Monog. Anc, t. 2, 



f. 12; t.6, f. 47. 

 Leptoxis rubiginosa. Lea, Haldeman, Monog. Lept., f. 50-70. Binxey, Check 



List, Xo. 383. Chexu, Manuel, i, f. 2035, 2036. Adams, Genera, i, p. 307. 

 Anculosa Grijjithiana, Lea, Philos. Pjjjjc, ii, p. 83, Oct., 1841. Philos. Trans., ix, 



p. 20. Ob?., iv, p. 20. Wiieatley, Cat. Shells U. S., p. 28. 

 Anculotus Grifflthsinnus, Lea, Reeve, Monog. Anculotus, 1. 1, f. 8. 

 Leptoxis Grijfithiana, Lea, Bin'.ney, Check List, No. 362. Adams, Genera, i, 



p. 307. 



Description. — Shell ovately gibbous, thick, smooth, rusty color: 

 spire rather elevated ; sutures impressed ; whorls flattened ; aperture 

 irregularl)^ ovate, within whitish ; columella thick, dark purple. 



Habitat. — "Warrior River, Alabama. 



Diameter, -40 ; length, -CO of an inch. 



Observations. — A single, and not a very perfect, specimen is before 



me. The middle of the whorl is flattened, in- 

 deed a little impressed, and this causes a curve 

 in the outer lip. It is obscurely banded, and the 

 whole of the columella is purple. The aperture 

 is nearly two-thirds the length of the shell. 

 The spire is more exserted than usual in the 

 Fig 731 Fig 732 Ancidoso;, but not perfect 

 in this specimen. Four 

 whorls are perceptible. — 

 Lea. 



727. Fig. 728. 



The following description of A. Oriffith- 

 iana by Mr. Lea will better exhibit the 

 usual state of the species. 



Ancrdosa Griffithiana. — Shcn ovately gibbous, thick, closely and 

 transversely striate, banded; sutures impressed; whorls four, flat- 

 tened; aperture ovate, within banded; columella thick, dark purple. 



Habitat. — Coosa River, Alabama. 



Diameter, -50 ; length, '60 of an inch. 



Observations. — The distinctive characters of this species are the 

 transverse striag and the flattened side. This flatness caiscs a nob 



