384 LAND AND FRESH-WATER SHELLS OF N. A. [pART IV. 



3. A. canalifera, Anthony. 



AncuJosa canalifera. Anthony, Proc. Acad. Nat. Sci., p. 68, Feb., 1860. 

 Anculotus canali/erus. Anthony, Reeve, Monog. Aiiciilotus, t. 5, f. 39. 

 Leptoxis canalifera, Anthony, BiNNEY, Check List, No. 345. Bkot, List, p. 24. 



Description. — Shell ovate, costate, of a brown color, thin; spire 



acutely elevated, composed of 5-6 sharply carinated whorls ; sutures 



not very distinct ; aperture about half the length of 

 Fig. 722. Fig. 723. 



the shell, ovate, banded inside ; columella deeply in- 



deuted; sinus none. 



Habitat. — North Carolina, in Dan Eiver. 



Observations. — One of our most curious and beau- 

 tiful species, which no one can easily mistake ; the whole shell is 

 crossed with sharp, elevated costse running round the whorls and 

 corresponding deep grooves between them ; about five costje on the 

 body- whorl ; a less number on the spire volutions ; these ribs appear 

 as dark bands in the interior of the aperture, and there is a broad, 

 non-elevated band at the base of the shell ; dififers from Anadosa 

 costata (nobis) by the size and prominence of its ribs and by its ele- 

 vated spire. — Anthony. 



Figure 722 is from Mr. Anthony's type. This species is 

 very closely allied to 3Ielania proscissa, Anthony, from the 

 same locality, and may proA^e to be a variety of that shell 

 with a shorter spire. It is a very beautiful species. 



3. Striate species. 

 4. A. littorina, Haldeman. 



Anculosa littorina, Haldeman, Spec. Number of Monog. Cover of No. 1, Monog. 



July, 1840. 

 Leptoxis littorina, Haldeman, Monog. Lept., p. 4, t. 4, f. 110. Binney, Clieck 



List, No. :i08. BuoT, List, p. 24. 

 Melania pilula, LEA, Philos. Proc, ii, p. 1.5, Feb., 1841. Philos. Trans., viii, p. 186, 



t. 6, f. 50. Obs., iii, p. 24, t. G, f. 50. DeKay, Moll. N. Y., p. 99. pig. 724. 



Tkoost, Cat. Moll. Tcnn. AVheatley, Cat. Shells U. S., p. 26. 



Binney, Check List, No. 204. Catlow, Conch. Nomeuc, jj. 188 



Adams, Genera, i, p. 307. 



Description. — Shell solid, conical, olivaceous, encir- 

 cled with transverse lines ; whorls four, flattened ; apex 

 eroded ; sutures scarcely excavated ; aperture somewhat rounded, an- 

 gulated above. 



