. Conchologia cestrica. The molluscous animals and their shells, of Chester county, Pa. Mollusks. CONCHOLOGIA CESTRICA. 27 Obs. — Our larg-est Helix. In some localities it has a tooth on the pillar lip. M. Sayii, Binn. Helix diodonta, Say, Long's Ex- ped., II., 1824. Sayii, Binn., Bost. Jour. Nat. Hist., III., 1840. J}I. Sii!/ii. — [B. & B.] Pig. 18. Jjint/tial Dentition of JtT, ulboUibvis. — [Morse.] Fig. Shell depressed-orbicular; whorls 5-6, obliquely striate ; aperture sub- orbicular ; lip narrowly reflected, white, and with a tubercular tooth at base; pillar lip toothed; umbili-
. Conchologia cestrica. The molluscous animals and their shells, of Chester county, Pa. Mollusks. CONCHOLOGIA CESTRICA. 27 Obs. — Our larg-est Helix. In some localities it has a tooth on the pillar lip. M. Sayii, Binn. Helix diodonta, Say, Long's Ex- ped., II., 1824. Sayii, Binn., Bost. Jour. Nat. Hist., III., 1840. J}I. Sii!/ii. — [B. & B.] Pig. 18. Jjint/tial Dentition of JtT, ulboUibvis. — [Morse.] Fig. Shell depressed-orbicular; whorls 5-6, obliquely striate ; aperture sub- orbicular ; lip narrowly reflected, white, and with a tubercular tooth at base; pillar lip toothed; umbili- cus narrow, deep; pale horn color. H. 15, W. 22, millimeters. Station, in forests, Western Penn- sylvania. M. Pennsylvanica, Green. Helix Pennsylvanica, Green, Cont. Maclur. Lye, No. i, 1827. M. Pennsylvfiiiien. — [B. & B.] Fig. Please note that these images are extracted from scanned page images that may have been digitally enhanced for readability - coloration and appearance of these illustrations may not perfectly resemble the original Hartman, William Dell, 1817-1899; Michener, Ezra, 1794-1887. Philadelphia, Claxton, Remsen & Haffelfinger
Size: 2037px × 1226px
Photo credit: © The Book Worm / Alamy / Afripics
License: Licensed
Model Released: No
Keywords: ., bookcentury1800, bookdecade1870, booksubjectmollusks, bookyear187
