The Amphipoda of Southern New England

The Amphipoda of Southern New England

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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. 1905 edition. Excerpt: ...point; peduncle of first pair with a large spine on outer side of distal extremity; outer ramus relatively much shorter than inner in second uropods than in first or third: telson long, narrow, flattened, grooved above, with a narrow fissure at posterior end which extends nearly to middle. Length, 17 mm. Norway; Arctic regions; Greenland; Grand Manan. Rhachotropis aculeata ( Lepechin). Head with a prominent, acuminate rostrum which is slightly curved downward; eyes prominent, tenuid, their inner ends obtusely pointed; a rounded prominence between posterior ends of eyes; first antenna; nearly as long as second, first basal joint thick, flattened; third joint about one-third length of second, which is shorter than first; flagellum subequal to base; thorax broad, last two segments with three strong spines on posterior margin, last segment considerably longer than preceding ones; first five segments devoid of spines with exception sometimes of a trace of a spine on the mid-dorsal line of fifth; coxal plates small, first strongly produced in front and incurved at its anterior angle; fourth and fifth with a short longitudinal eminence on outer surface; first two gnathopods similar; carpus short, with a narrow posterior lobe; hand large, ovate, a prominence at upper end of the evenly convex palm; all of the peneopods with slender, elongate, slightly-curved dactyls, basal joints of fourth and fifth pairs with a large tooth on proximal portion of posterior margin; last peneopods much longer than others, basal joint much expanded proximally, the posterior margin strongly sinuous with a large tooth at lower end; first three abdominal segments flattened at sides, with three longitudinal dorsal carina;, each of which ends on the posterior margin of its...show more

Product details

  • Paperback | 40 pages
  • 189 x 246 x 2mm | 91g
  • Rarebooksclub.com
  • Miami Fl, United States
  • English
  • black & white illustrations
  • 1236494652
  • 9781236494658