Items related to Manual of conchology, structural and systematic Volume...
Manual of conchology, structural and systematic Volume 6; with illustrations of the species - Softcover
Synopsis
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. 1884 Excerpt: ...lip deeply excavated below the suture, margin thin and sharp; columella twisted. Length, 21 mill. Unga Island, Shumagin Group, Alaska. Much resembles Pl. declivis, Martens, from Japan. If identical, the latter name will become a synonym. D. Corusca, Reeve. Pl. 13, fig. 60. Shell rather pyramidal, highly polished; upper portion of the whorls flat, clouded with reddish brown and white, lower portion more prominent, encircled with a row of irregular reddish brown dots, last whorl encircled with two rows of dots; aperture short; canal very short. Length,-75 inch. Philippines (Cuming). Two specimens only of this singular shell were obtained; it differs much from the ordinary type of Drillia, the form being mcre like a Paphnella, but it appears to be a thick species. D. Vexillum, Reeve. Pl. 13, fig. 12 (f). Shell closely ribbed, and with revolving ridges at the base; yellowish, the lower half of the body-whorl, and a narrow lower portion of those of the spire chocolate-brown. Length, 11 mill. Pt. Jackson, Australia (Angas). D. Arata, Reeve. Pl. 15, fig. 27 ). Shell pyramidal, sutures peculiarly excavated; whorls very closely encircled with narrow granulous ridges; aperture small; yellowish white. Length, 9 mill. Habitat unknown. The ridges are said to be more granulous towards the apex.. I am not acquainted with the species. D. Paooda, Reeve. Pl. 15, fig. 23. Shell pyramidal, whorls depressed at the upper part, slightly angled, ribbed at the angle, ribs short, close-set, decussated throughout with raised lines; ashy red, stained with dark red spots between the ribs, lip and columella stained with dark red; canal short. Length, 8 mill. Habitat unknown. D. TURRts, Reeve. Pl. 15, fig. 30 (f). Pyramidally acuminated, whorls longitudinally stoutly ribbed, transversely...
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