Verwandte Artikel zu A manual of American land shells
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This historic book may have numerous typos and missing text. Purchasers can download a free scanned copy of the original book (without typos) from the publisher. Not indexed. Not illustrated. 1885 Excerpt: ...It is an unknown species. The following description is copied from manuscript of Dr. Binney: Shell flattened, the upper surface acutely carinated; epidermis light horn-color; whorls 7, narrow, increasing in width very gradually from the apex to the aperture, striated with hue, prominent, distinctly separated, curved liues; aperture angular, depressed, contracted; peristome above the carina acute, below a little reflected; base subconvex, smooth; umbilicus opeu, moderate in size, exhibiting two or three volutions. Greatest transverse diameter about onehalf an inch. Found hitherto only in the eastern part of Tennessee, whence a single specimen was brought by Mr. Haldeman. This pretty species is described with some reluctance from a single specimen, as it may be considered doubtful, until another be found, whether it may not be a foreign shell introduced by mistake among Tennessean shells. It is quite flat on the upper surface, rising a little towards tbe apex; the whorls, which are distinctly marked, are beautifully striated with delicate, promiuent curved lines, which are crowded towards the apex, and separately by a distinct interval on the outer whorl; they terminate on the edge of the carina, which is a little plaited by them, the base below being smooth. The aperture is narrow and marked by an angle at the carina. The lip below the carina has a distinct though narrow reflection. The umbilicus is moderate, conical, and rather deep, exhibiting about three volutions. In Lamarck's arrangement it would be a Carocolla. Helix tenuisiriata, Blnney, Bost. Journ. Nat. Hist., 1842, iv, part i, cover, 3.--PfeifFer, Mon. Hel. Viv., i, 432--W. G. Binney, Terr. Moll, iv, 118; L. & Fr.-W. Sh., i, 77 (1869). Helix vortex, teste Gould (non Pfeiffer), Terr. Moll., iii,...
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