Revision of the Deep-Water Mollusca of the Atlantic Coast of North America; With Descriptions of New Genera and Species Volume 1

Revision of the Deep-Water Mollusca of the Atlantic Coast of North America; With Descriptions of New Genera and Species Volume 1

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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. 1898 edition. Excerpt: ...off Marthas Vineyard, in 1,813 fathoms, 1885. This species is closely allied to Hyalopecten fragilis (Jeffreys) and resembles very nearly his figure,1 which probably represents a species distinct from the original type described by him, and may be identical with our shell. The latter differs decidedly from the original descrip tion of if. fragilis. Moreover, we have obtained from several stations a shell of similar size which appears to be the true fragilis,2 as it agrees closely with the description. Hyalopecten pudicus (Smith) from east of Marion Island, in 1,375 fathoms, is a closely related species, as is also Hyalopecten undatus Verrill. These four species agree in having the valves thin and translucent and sculptured with distinct concentric undulations, while the radial sculpture does not form strong ribs. They seem to be related to the genus or subgenus Syncyclonema Meek, which was based on a cretaceous species and has not hitherto been reported as still living. But the exact characters of the typical fossil species are not yet known. 1 Proc. Zool. Soc., London, pl. Xlv, fig. 1, June, 1879. 8 The true Hyalopecten fragilis (Jeffreys) was taken at five stations between N. lat. 40 6', W. long. 68 1' 30," and N. lat. 35 49' 30," W. long. 74 34' 45," in 578 to 1,525 fathoms, 1883-1886. CAMPTONECTES GRCENLANDICA (Sowerby) Verrill. (Plate LXXXV, fig. 7.) Pecten grocnlandicus Sowerby, Thesaurus Conchyliorum, Pt. n, p. 57, pl. xm, fig. 40,1842.--Hanley, Recent Shells, p. 274, 1842 to 1856.--Jeffreys, Aim. and Mag. Nat. History, p. 231, 1877. Pecten grfinlandicus G. O. Sars, Moll. Reg. Arct. Norveg., p. 23, pl. 2, figs. 4, a-c, 1878. Pecten grwnlandicus Jf.ffreys, Proc. Zool. Soe. Loudon, p. 560,1879.--Verrill, Check-list, p. 26, ...show more

Product details

  • Paperback | 56 pages
  • 189 x 246 x 3mm | 118g
  • Rarebooksclub.com
  • Miami Fl, United States
  • English
  • black & white illustrations
  • 1236510097
  • 9781236510099