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Title:Notes on Species of North American Oligochaeta. IV. On a New Lumbriculid Genus From Ordia, with Additional Notes on the Nephridial and Circulatory Systems of Mesoporodrilus Asymmetricus Smith
Author(s):Smith, F.
North America
Abstract:The worms here described were found by Mr. Adolph Hempel in a decayed stump in a marsh in Polk county, Florida, in March, 1897. The collection consists of eight sexually mature individuals and a few others that are imperfect or immature. The worms were killed in corrosive sublimate and preserved in alcohol, and are in excellent condition for study. All of the facts pertaining to this species which are presented in this paper have necessarily been obtained from an examination of this preserved material. Sexually mature specimens, well extended, average about 50 mm. in length and 1 mm. in diameter at the tenth somite, where the diameter is greatest. The body gradually decreases in diameter toward the posterior end, where the somites are relatively smaller and less distinct. The anterior end terminates in a proboscis about .15 mm. in length, its diameter being .07 mm. at the base and .035 mm. at the middle. In these preserved specimens it is bent upwards. In five apparently complete individuals the number of somites varies from 155 to 177, the average number being 167.
Issue Date:1900
Publisher:Champaign : Illinois Natural History Survey
Series/Report:Illinois Natural History Survey Bulletin; v. 005, no. 11
Rights Information:Copyright 2009. University of Illinois Board of Trustees. All rights reserved.
Date Available in IDEALS:2014-10-08

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