Bulletin of the American Museum of Natural History Volume 44

Bulletin of the American Museum of Natural History Volume 44

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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. 1921 edition. Excerpt: ... intestinal gland st stomach ip incubatory pouch Irv transverse vesel k kidney up vascular process Order Arnousonmncnmn Lahille = Krikobranchia Seeliger Compound ascidians having the body divided into two or three distinct parts or segements (thorax, abdomen, and sometimes post-abdomen), the digestive tract and reproductive organs being situated in the posterior part or parts of the body. Tentacles simple; branchial sac without folds or internal longitudinal vessels. Body consisting of three divisions or segments, the last (post-abdomen) containing the reproductive organs and heart. Budding by segmentation of the postabdomen. Post-abdomen a small oval sac connected by a narrow elongated neck with the abdomen. Stomach wall smooth, intestine twisted into a closed loop posterior to the stomach. Inner aspect of transverse vessels of branchial sac with small papilla. Polyclinum constollatum Savigny, 1816 Figures 1 and 2 1816. Polyclinum conslellatum Savigny, 'Mem. s. l. animaux sans vertebres, ' pt. 2, p. 189, P1. Iv, fig. 2; Pl.XVII1, fig. 1. 1820. Polyclinum con-slellalzun Savigny-Oken, Isis, pp. 660, 874, figs. on Pls. XII and xvm. 1891. Polyclinum conslellatum I-lerdman, Journ. Linn. Soc. London, Zool., XXIII, p. 619. 1905. Polyclinum festum Hartmeyer, Zool. Jahrbilcher, Syst., VIII, suppl., p. 401, P. xm, figs. 6, 7. 1909-1911. Polyclinum conslellatum ] P. feslum Hartmeyer, Bronn's 'Tierreich, ' III, suppl., pp. 1461, 1640, 1641. 1912. Polycl-inum constellatum Hartmeyer, 'Deutsch. Tiefsec-Exp., 'XVI, p. 334. 1916. Polyclinum comtellatum + P. festum Hartmeyer, Sitzungsber. Gesell. naturf. Freunde, Berlin, ann. 1915, p. 429. 1918. Polyclinumfestum Van Name, Bull. U. S. Nat. Mus., No. 100, I, p. 162, ...
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Product details

  • Paperback | 214 pages
  • 189 x 246 x 11mm | 390g
  • United States
  • English
  • Illustrations, black and white
  • 1236756207
  • 9781236756206