Contributions Volume 10

Contributions Volume 10

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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. 1904 edition. Excerpt: ...sp. nov. (PI. XXIV, flgs. 28, 29. 30.) The type and only specimen is complete but in several pieces, which have a total length of 95 mm., with a maximum width of 6 mm. at XV. There are 118 fully developed somites and a small caudal tip of 6 regenerating ones. Prostomium slightly broader than long, broadly rounded anteriorly, where it is about the greatest breadth across the anterior eyes, broadly excavated at the sides for the bases of the palpi. Eyes 2 pairs, both with cuticular lenses, large, the anterior slightly the larger and farthest apart. Frontal tentacles short, awl-shaped, about equal in length to the distance between the posterior eyes. Palpi reaching to tips of frontal tentacles, the bases stout and swollen, the styles nearly spherical, knob-like, partly retracted into ends of bases, and about i diameter of these. Peristomium dorsally nearly length of prostomium, its enlarged lateral part as long. Tentacular cirri rather short, the styles more or less distinctly articulated, posterior dorsal reaching VI, anterior dorsal V, posterior ventral III and anterior ventral II. The form of the somites presents nothing characteristic and the caudal cirri are wanting. The parapodia resemble those of N. dumerilii, but the lobes are more prolonged, and the dorsal cirrus has a more basal origin throughout the series. The typical foot presents four principal elongated subequal lobes, with a slender notopodial cirrus, about twice the length of the lobes, arising from the swollen region near the middle of the dorsal margin of the foot, and a neuropodial cirrus, about equalling the ventral lobe, from which it is separated by a short interval. The neuropodium consists of a rather truncate setigerous lobe, bearing a broad presetal process, into...show more

Product details

  • Paperback | 180 pages
  • 189 x 246 x 10mm | 331g
  • Rarebooksclub.com
  • Miami Fl, United States
  • English
  • black & white illustrations
  • 1236497899
  • 9781236497895