. Bulletin. Science; Natural history; Natural history. This name was cited as a nomen nudum by Bequaert and Miller, The Mollusks of the Arid Southwest, p. 117. 1973. Diagnosis.—A species of moderate size, finely striate body whorl, characterized anatomically by a very long verge and a short oviduct. Description of Hololype.—Shell heliciform, de- pressed conic, whorls four and one half, increasing gradually to the last whorl which is moderately ex- panded and descends behind the aperture so that the last one eighth of the body whorl lies at an angle of about 25 degrees with the transverse axis
. Bulletin. Science; Natural history; Natural history. This name was cited as a nomen nudum by Bequaert and Miller, The Mollusks of the Arid Southwest, p. 117. 1973. Diagnosis.—A species of moderate size, finely striate body whorl, characterized anatomically by a very long verge and a short oviduct. Description of Hololype.—Shell heliciform, de- pressed conic, whorls four and one half, increasing gradually to the last whorl which is moderately ex- panded and descends behind the aperture so that the last one eighth of the body whorl lies at an angle of about 25 degrees with the transverse axis of the shell. Whorls convex, flattened above, rounded on the base. Aperture rounded-oval and lying at an angle of about 45 degrees with the vertical axis. Peristome very slightly expanded, not appreciably thickened, and with a thin parietal callus; the columellar end of the peristome slightly reflected over the margin of the umbilicus. Width of the umbilicus contained about seven times in the greater diameter of the shell. Sur- face glossy, color light sayal brown, lighter on the base and on each side of the peripheral chestnut brown band. Embryonic shell consists of one and one half whorl, apex smooth, followed by indistinct radial wrinkling which continues over the remainder of the embryonic portion of the shell and as far as the first half of the penultimate whorl where it is replaced by delicate growth lines. Early whorls have a minutely granulose appearance with here and there suggestions of papillae which have been nearly effaced by erosion. There are numerous impressed spiral lines on the upper surface of the body whorl and on the last half of the base of the body Figure 2. Sonorella imitator, new species, three views. Figure 3. Oreohelix grahamensis, new species. Genitalia drawing made from projection of stained whole mount. See figure 1 for key to Please note that these images are extracted from scanned page images that may have been digital
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Keywords: ., bookcentury1900, booksubjectnaturalhistory, booksubjectscience
