Lister's figure, which is without doubt a representation of thisspecies, is red to in Gmelin as H. radiate, but we be lieve our shell to be a distinct species from that which is found in France ; we therefore apply a new name. Found un der bark of dead trees, and in moist places, and is not uncommon. In the young shell the whorls are less rounded, and are flattened above, so as to form almost an angle with the exterior margin ; the colours are altogether paler, and may be described as pale yellow, spotted or above radiate with reddish-brown, and a row of spots interrupted from the radii by the immaculate prominent margin.
5. II. Glaphyra. Shell very much de pressed, thin, fragile, pellucid, polish ed ; whorls five, regularly rounded, and with obsolete and irregular wrinkles across them ; beneath whitish ; umbili cus moderate, not exhibiting the volu tions.
Plate 1. fig. 3.
Taken by Mr. G. Ord in his garden, Philadelphia.
This species and the preceding are re ferable to the genus Zonitis, Montt*, a name which is objectionable from its be ing used in Entomology.
It considerably resembles Helix nitens of Europe, particularly in being whitish beneath, and will be properly arranged next that species in the systems.
6. H. thyroidus. Shell thin, fragile, con vex, umbilicate ; whorls five, obtusely wrinkled, or rather with equidistant, gradually elevated, obtuse lines, and spi rally striate with minute, impressed lines ; lip widely reflected, white and flat before, partially concealing the umbilicus ; pillar lip furnished with a very oblique tooth.
Journal of the acad. of Nat. Sciences, vol. i. p. 123.
Breadth four-fifths to nine-tenths of an inch.
This species very much resembles H. Albolabns, but is umbilicated, and toothed on the pillar lip. It is much less common. It is referable to the genus Montf 7. A. minuta. Shell rather thick ; spire convex, little elevated, with three volu suture well defined, impressed ; whorls obtusely wrinkled across ; aper ture nearly orbicular ; lip much thicken ed, reflected, white, distant from the um bilicus ; umbilicus large, exhibiting the volutions.
Breadth less than one-tenth of an inch.
Jour. ...lead. .A''at. Sciences, vol. i. p. 124.
Found under the bark of a decaying oak ; is readily distinguishable from other species by its small size and conspicuous lip. It is a true Helix.
8. H. labyrinthica. Shell conic, dark red dish brown, body lighter ; whorls five or six, with conspicuous, elevated, equidis tant, obtuse lines across, forming grooves between them ; apex obtuse ' • lip reflect ed, rounded ; pillar lip with a large, la melliform, elongated tooth, which ap pears to revolve within the shell parallel to the suture, a smaller raised line re volves nearer .to the base within the
shell, but becomes obsolete before it ar rives at the pillar lip ; umbilicus rather large.
Breadth one tenth of an inch.
Jour. Acad. Nat. Sciences, vol. i. p. 124.
Found on fungus in decaying wood : this shell is remarkable for the two much elevated lines, which revolve within the shell upon the penultimate whorl, the up per one larger, and terminating at the aperture very conspicuously, and resem bling a tooth.
9. H. Ifirsuta. Shell subglobose, brown ish, imperfcirated, covered with short, nu merous, rigid hairs ; whorls five, but little rounded ; suture distinct ; aperture very narrow, almost closed by an elongated, lamelliform tooth, situated on the pillar lip, and circularly joined to the outer-lip at the base. Outer-lip reflected back up. on the whorl, and incorporated with it near the base, with a deep sinus in the middle. Breadth one-fourth of an inch. Lister. tab. 93.f 94? Inhabits moist places. Common.
This species appears to be somewhat allied to the H. hispida, but is sufficiently distinct. Found by Mr. Lardner Vanux em. It approaches the genus Caprinus Montf. but differs in having the lips disu nited above.
10. H.perspectiva. Shell very much de pressed, with about six whorls ; whorls striated across, with raised, parallel, acute lines, forming strongly impressed sulcz between them. Umbilicus very large, resembling an inverted spire, in diameter at least equal to the breadth of the body whorl, and exhibiting distinctly all the vo lutions. Diameter three-tenths of an inch.
Journal dead. Nat. Sciences, vol. i. p. 18.
Found by Mr. Le Sueur, near Lake Erie. It is referable to the genus Zoni his, Montf.
11. H. Lineata. Shell very much depress ed, somewhat discoidal. Whorls about four, each longer than broad,with nume rous, raised, parallel, equidistant, regular, revolving lines. Suture impressed. Um bilicus very large, diameter at least equal to the body whorl, and exhibiting all the volutions distinctly. Aperture longer than wide, Innate. Diameter three-twen tieths of an inch, nearly.
Jour. Acad. Nat. Sciences, vol. i. p.18.
Found by Mr. Robert E. Griffith, near Philadelphia. Somewhat resembles the last, but is more depressed, and the stria: are transverse, not longitudinal as in that shell ; the cavity beneath also, though of equal proportional diameter, is not pro portionally deep. Belongs to the genus Zonitis, Monf.