The validity of Siren intermedia Leconte, with observations on its life history. American Museum novitates ; no. 532

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dc.contributor.authorNoble, Gladwyn Kingsley, 1894-1940.en_US
dc.contributor.authorMarshall, B. C.en_US
dc.date.accessioned2005-10-06T17:24:41Z
dc.date.available2005-10-06T17:24:41Z
dc.date.issued1932en_US
dc.description17 p. : ill. ; 24 cm.en_US
dc.descriptionIncludes bibliographical references (p. 16-17).en_US
dc.description.abstract"There are two species of Siren widely distributed throughout United States. These are distinguished by size at ovulation, the average number of costal grooves, the size of the eggs, thickness of the egg-capsules, the coloration of the young for nine months after hatching, and the body proportions for a more extended period. 2. LeConte did not distinguish between these species when describing Siren intermedia, but we reinstate this name usually placed in the synonymy of lacertina and restrict it to the smaller species described here. 3. The recently hatched young of S. intermedia is remarkable for its long body, short tail, and broad dorsal fin extending the full length of the back. 4. Changes taking place in the head and forelimbs during the first fifty-five days after hatching are described. No balancer ever appears. 5. Reduction of the dorsal fin begins about two months after hatching but is not complete in some specimens until nine months. 6. Both species of Siren are nocturnal. The adult intermedia devours quantities of Spirogyra and possibly other algae with its animal food which consists of crayfish and molluscs"--P. 16.en_US
dc.format.extent2116789 bytes
dc.format.mimetypeapplication/pdf
dc.identifier.urihttp://hdl.handle.net/2246/4055
dc.languageengen_US
dc.language.isoen_US
dc.publisherNew York City : The American Museum of Natural Historyen_US
dc.relation.ispartofseriesAmerican Museum novitates ; no. 532en_US
dc.subject.lccQL1 .A436 no.532, 1932en_US
dc.subject.lcshSiren intermedia.en_US
dc.subject.lcshSirenidae.en_US
dc.subject.lcshSalamanders -- Southern States.en_US
dc.subject.lcshSalamanders -- Mexico.en_US
dc.subject.lcshAmphibians -- Southern States.en_US
dc.subject.lcshAmphibians -- Mexico.en_US
dc.titleThe validity of Siren intermedia Leconte, with observations on its life history. American Museum novitates ; no. 532en_US
dc.title.alternativeLife history of Siren intermediaen_US
dc.typetexten_US

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