This historic book may have numerous typos and missing text. Purchasers can usually download a free scanned copy of the original book (without typos) from the publisher. Not indexed. Not illustrated. 1908 edition. Excerpt: ...16.5 mm. A larger specimen is 23.5 by 20 mm. U. S. S. "Albatross," stations 2799, 2800, 2801, 2803, 2804, in the Bay of Panama, in 7 to 47 fathoms, mud; also, dead specimens, at stations 3354 and 3392, in 322 to 1270 fathoms, muddy bottom. U. S. N. Mus. (types) 46,446. The young shell has darker, faint ...
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This historic book may have numerous typos and missing text. Purchasers can usually download a free scanned copy of the original book (without typos) from the publisher. Not indexed. Not illustrated. 1908 edition. Excerpt: ...16.5 mm. A larger specimen is 23.5 by 20 mm. U. S. S. "Albatross," stations 2799, 2800, 2801, 2803, 2804, in the Bay of Panama, in 7 to 47 fathoms, mud; also, dead specimens, at stations 3354 and 3392, in 322 to 1270 fathoms, muddy bottom. U. S. N. Mus. (types) 46,446. The young shell has darker, faint brownish streaks obscurely disposed in two or three spiral bands. The adult is without perceptible pattern. The shell belongs to the group of "maroccana," under which so many distinct forms have been lumped by undiscriminating authors, and is perhaps nearest to some varieties of the West Indian N. livida Philippi, which has a differently sculptured operculum. Shell small, moderately elevated, with about three whorls, exclusive of a smooth, polished nucleus of two and a half whorls, which changes abruptly into the adult sculpture; suture distinct; color pale brown with three obscure pale bands, one about the region of the shoulder, another a little in front of the periphery, and the third, less distinct, on the base; all rather ill defined; whorls smooth, except between the shoulder and the suture, where start numerous (on the last whorl twenty-six), sharp, very obliquely retractive, narrow wrinkles; aperture ovate, outer lip areuate, thin, simple, sharp; body with a well-marked callus, terminating at a notch at the posterier end of the umbilicus; at the pillar is a pad, formed by the end of a flattish ridge, which winds into the depths of the umbilicus, leaving a narrow chink to the left of the pad; anterior lip slightly thickened; operculum flat, white, with brownish clouding, a small patch of roughened callus obscuring the spiral part externally; outer edge elevated, with two deep, very narrow sulci revolving...
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Seller's Description:
*Price HAS BEEN REDUCED by 10% until Monday, Nov. 11 (weekend sale item)* [283] pp., 21 plates including two small folding maps; later cloth with original paper sides retained, signature and hand stamp (dated 1958) of Robert Robertson of the Academy of Natural Sciences of Philadelphia, an expert in this field; the material was gathered in connection with the expeditions of the ship Albatross in 1891 and 1904-1905. -If you are reading this, this item is actually (physically) in our stock and ready for shipment once ordered. We are not bookjackers. Buyer is responsible for any additional duties, taxes, or fees required by recipient's country.
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