File:American malacological bulletin (1986) (18157458741).jpg

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Description
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Title: American malacological bulletin
Identifier: americanmal4519861987amer (find matches)
Year: 1983 (1980s)
Authors: American Malacological Union
Subjects: Mollusks; Mollusks
Publisher: (Hattiesburg, Miss. ?) : (American Malacological Union)
Contributing Library: Smithsonian Libraries
Digitizing Sponsor: Biodiversity Heritage Library

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194 AMER. MALAC. BULL. 4(2) (1986)
Text Appearing After Image:
. g . h i Fig. 4. Partial sections (except g) of prosobranch egg capsules showing various laminae. Basal laminae are positioned toward the bottom of the page. Optically dense layers are the broadest, solid lines. Some capsules contain embryos. Magnification bars = 0.05 mm. (a) Smaragdia viridis viridemaris (b) Alvania auberiana, outer lamina with detritus, (c) Rissoina catesbyana. (d) ft. bryerea. (e) Zebina browniana. (f) Rissoella caribaea. (g) Caecum nitidum, section of a whole capsule surrounded by feces. Note that the embryo is attached to the capsule, (h) Marginella aureocincta, outer lamina with irregular granules oriented toward the capsular apex, (i) Granulina ovuliformis, spongy region located at the confluence of the major laminae. filled ovum that hatched as a crawling juvenile in 28 days. Gross structure of the tansparent and colorless capsules was lingulate or wedge-shaped with a pronounced apical ridge arranged at right angles to the long axis (Figs. 2i, j). The aper- tural area was broad, while the basal area usually tapered to a central point below it, somewhat like capsules of Ris- soina catesbyana. In section, the outer envelope was com- posed of a matrix surrounding an optically dense lamina (Fig. 4e). As in the other rissoinids studied, an innermost granular lamina surrounded the embryo, which was suspended in thin albumen. Few obvious vesicles were apparent between the innermost lamina and the optically dense lamina (Fig. 4e). Rissoella caribaea Rehder, 1943 (USNM 836986) Adult specimens from southern Florida and Bimini, Bahamas, were collected and observed between February and May, 1985. Egg capsules were first deposited by

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Volume
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4
Flickr tags
InfoField
  • bookid:americanmal4519861987amer
  • bookyear:1983
  • bookdecade:1980
  • bookcentury:1900
  • bookauthor:American_Malacological_Union
  • booksubject:Mollusks
  • bookpublisher:_Hattiesburg_Miss_American_Malacological_Union_
  • bookcontributor:Smithsonian_Libraries
  • booksponsor:Biodiversity_Heritage_Library
  • bookleafnumber:208
  • bookcollection:biodiversity
  • BHL Collection
  • BHL Consortium
Flickr posted date
InfoField
27 May 2015

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Public domain
This work is in the public domain because it was published in the United States between 1978 and March 1, 1989 without a copyright notice, and its copyright was not subsequently registered with the U.S. Copyright Office within 5 years. Unless its author has been dead for several years, it is copyrighted in the countries or areas that do not apply the rule of the shorter term for US works, such as Canada (50 pma), Mainland China (50 pma, not Hong Kong or Macau), Germany (70 pma), Mexico (100 pma), Switzerland (70 pma), and other countries with individual treaties. See this page for further explanation.

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