A Monograph of the Marine and Freshwater Ostracoda of the North Atlantic and of North-Western Europe. Section I. Podocopa

A Monograph of the Marine and Freshwater Ostracoda of the North Atlantic and of North-Western Europe. Section I. Podocopa

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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. 1889 edition. Excerpt: ...Norway. 1866. Cythere costata, Brady, Trans. Zool. Soc., vol. v., p. 375, pl. lx., figs. 5 a-f. 1868. Cythere costata, Norman, Brit. Assoc. Report, 1868, p. 290. 1874. Cg/there costata, Brady, Crosskey, Robertson, Post-tert. Entom., p. 166, pl. v., figs. 21-24. Female. iOarapace compressed, oblong, seen from the side subquadrangular, A ii' highest in front of the middle, greatest height equal to somewhat more than half 'tlie"'length; anterior extremity broad and well-rounded; posterior narrow, obliquely truncated, slightly produced below the middle, inferior angle rounded "and divided into four or five short obtuse teeth; dorsal margin sloping from the front backwards in a somewhat sinuous line; ventral straight or very slightly sinuated. Seen from above, compressed, irregularly ovate, greatest width situated behind the middle, and equal to rather more than one-third of the length, sides irregularly sinuated and converging gradually to the extremities, which are equal and obtusely pointed.) The surfaceis pitted with closely-set large angular excavations, afid each valve has three or four obliquely transverse sharply-cut ribs, which rise from a single longitudinal ridge just within the ventral border and is continued round the anterior margin. Length, 1'1 mm. The shell of the male is longer, narrower, and distinctly quadrangular; its greatest height is less than half the length, and the superior margin of the left valve is raised into a conspicuous prominence over the anterior hinge. HaIn'tat.--D1-edged on the Unst Haaf, Shetland (A. M. N.). Dz'strz'butz'on.--Tl1e type specimens were dredged by 1)r. Sutherland in a depth of 60-70 fath., oft the Hunde Islands, Baffin's Bay (G. S. B.); Holsteinborg Harbour, Greenland, ...
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Product details

  • Paperback | 58 pages
  • 189 x 246 x 3mm | 122g
  • United States
  • English
  • black & white illustrations
  • 1236873378
  • 9781236873378