. Bulletin of the Museum of Comparative Zoology at Harvard College. Zoology; Zoology. Fig. 43. Helix {Conulus) chcrsinella, Dall, Amer. Journ. Conch., II. 328, PI. XXI. Fig. 4 (1866). Conulus chersiyiella, Tryon, Amer. Journ. Conch., III. 162 (1867). Z. chersinellus. Hyalina chersinella, W. G. Binney, L. & Sh., I. 47 (1869). " Big Trees," Calaveras County, California: it must be considered a species of the California Region. The description and figure are drawn from an authentic specimen. Animal not observed. Zonites capsella, Gould. Vol. III. PI. XXIX a. Fig. 2. Shell qui
. Bulletin of the Museum of Comparative Zoology at Harvard College. Zoology; Zoology. Fig. 43. Helix {Conulus) chcrsinella, Dall, Amer. Journ. Conch., II. 328, PI. XXI. Fig. 4 (1866). Conulus chersiyiella, Tryon, Amer. Journ. Conch., III. 162 (1867). Z. chersinellus. Hyalina chersinella, W. G. Binney, L. & Sh., I. 47 (1869). " Big Trees," Calaveras County, California: it must be considered a species of the California Region. The description and figure are drawn from an authentic specimen. Animal not observed. Zonites capsella, Gould. Vol. III. PI. XXIX a. Fig. 2. Shell quite small, planorboid, pellucid, glistening, amber- colored ; spire nearly plane, composed of about 6^ closely revolving, flattened whorls ; surface with distant, impressed, radiating striae; suture margined; aperture narrow, semi- lunar; peristome simple, not thickened by callus within; base perforated by a deep, rather small, funnel-shaped umbilicus. Greater diameter, 5 mill ; height, 2^ mill. Helix rotula, Gould. Pt'^.^^. Bost. Soa, III. 38 (June, 1848). — Pfeiffer, Mon. Hel., III. 107, Helix capsella, Gould in Terr. Moll., II. 239, PI. XXIX. a, Fig. 2. —W. G. Binney, Terr. Moll., IV. 117. —Lewis, Amer. Journ. Conch., VI. 188, ri. XII. p. 12 (1871). 1 The strict rules of nomenclature would require the use of Gould's first name, rotula, which is not preoccupied in Z. 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 Harvard University. Museum of Comparative Zoology. Cambridge, Mass. : The Museum
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