Report on the Scientific Results of the Voyage of H.M.S. Challenger During the Years 1873-76 Under the Command of Captain George S. Nares and the Late Captain Frank Tourle Thomson Volume 5, V. 13

Report on the Scientific Results of the Voyage of H.M.S. Challenger During the Years 1873-76 Under the Command of Captain George S. Nares and the Late Captain Frank Tourle Thomson Volume 5, V. 13

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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. 1885 edition. Excerpt: ...It is moderately convex, very thin and fragile, the slightest inequilateral, the anterior end being a trifle longer than the posterior. It is clothed with a thin pale yellowish epidermis, is glossy only at the umbones, and marked with very fine incremental striae. The beaks are small, white, the lea-st raised above the dorsal line, and situated the slightest behind the centre. The front dorsal margin is shortly curved at first, then descends obliquely in a straightish line to the anterior extremity. The posterior margin descends rather more obliquely from the beaks in a gentle curve. The hinge-plate is feeble and bears about seven conical teeth in front of the centre and twelve or fourteen rather smaller and more oblique ones on the hinder side. The ligament is small, and inclines obliquely towards the posterior side from the tip of umbones. The interior is glossy, and of a pale bluish tint. Length 5 mm., height 4, diameter 2%. Habitat.--Station 237, ofi' the south-east of Nipon, Japan, in 1875 fathoms. Until the discovery of this species, the genus Glomus has only been known as an Atlantic type. This is quite distinct from all the other species, being larger and different in form and dentition. Habitat.--Station 5, February 21, 1873; lat. 24 20' N., long. 24 28' W.; southwest of the Canary Islands; depth, 2740 fathoms; bottom, red clay. I The single perfect specimen and a few odd dead valves #i %L, ._from the above locality do not correspond exactly with the Li1gg1e: r's(gi;$zta, Lirgzzefsfiiifw typical examples of this species with which I have com-I pared them. They are rather less oblique in growth, have the anterior side, or that towards which the umbones incline, somewhat straighter, the...show more

Product details

  • Paperback | 246 pages
  • 189 x 246 x 13mm | 445g
  • Rarebooksclub.com
  • United States
  • English
  • black & white illustrations
  • 1236904036
  • 9781236904034