Contributions from the Zoological Laboratory Volume 6

Contributions from the Zoological Laboratory Volume 6

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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. 1918 edition. Excerpt: ...groove 11/12. Spermathecal pores paired on 8-Longitudinal muscle layer completely separated into eight longitudinal bands. Transverse blood vessels, two pairs, in each Of H105! _50Im'tes. Spermaries and spermiducal funnels paired in 10, or two pairs 111 9 and 10; sperm ducts, one or two pair, opening into a pair of long atriaOvaries paired, in 11. Spermathecae paired, in 8, without diverticula Pel1-ing into the spermathecal ducts, ampullae communicating with 316 3-limentary tract. 6 ' Contributions from the Zoological Laboratory of the University of Illilwifi, N0 l' Arabic numerals are used to designate the somites, counted from the 9-l1l11'i1' end RHYNCHELMIS ELRODI SP. NOV. Length, 47-65 mm. Somites, 133-177. Proboscis long and slender. Setae closely paired. Clitellum on 9-17. Spermiducal, oviducal, and spermathecal pores nearly in seta line ab. Longitudinal muscle bands not spirally rolled at edges. Ventral vessel forked in 7, and connected with dorsal vessel in 1. First nephridia in 13. Spermaries paired, ill 10. Spermiducal furmels, one pair; sperm ducts, one pair, imbedded in the walls of the atria. Albumen glands lacking. Spermathecae, one pair in 8; communicating by ducts with the alimentary tract. From the mucky banks of a creek near the Biological Station at Flathead Lake in western Montana. Holotype and paratypes in the collection of the senior author (Cat No. 1058). The more important facts of structure were gained from the study Oi a series of sagittal sections of the 33 anterior somites of one specimen: and of two series of transverse sections from the anterior 18 somites of each 'If two other specimens, of which one is the type. EXTERNAL CHARACTERS Alcoholic specimens, apparently sexually mature, are 47-65 mm-in...show more

Product details

  • Paperback | 202 pages
  • 189 x 246 x 11mm | 372g
  • Rarebooksclub.com
  • United States
  • English
  • black & white illustrations
  • 1236819497
  • 9781236819499