Project Gutenberg's The Tadpoles of Bufo cognatus Say, by Hobart M. Smith

This eBook is for the use of anyone anywhere at no cost and with
almost no restrictions whatsoever. You may copy it, give it away or
re-use it under the terms of the Project Gutenberg License included
with this eBook or online at www.gutenberg.net

Title: The Tadpoles of Bufo cognatus Say

Author: Hobart M. Smith

Release Date: January 18, 2010 [EBook #31011]

Language: English

Character set encoding: ASCII

*** START OF THIS PROJECT GUTENBERG EBOOK THE TADPOLES OF BUFO COGNATUS SAY ***

Produced by Chris Curnow, Joseph Cooper, Diane Monico, and
the Online Distributed Proofreading Team at
http://www.pgdp.net

The Tadpoles of Bufo cognatus Say

BY
HOBART M. SMITH

University of Kansas Publications
Museum of Natural History

Volume 1, No. 3, pp. 93-96, 1 figure in text

August 15, 1946

UNIVERSITY OF KANSAS
LAWRENCE
1946

UNIVERSITY OF KANSAS PUBLICATIONS, MUSEUM OF NATURAL HISTORY

Editors: E. Raymond Hall, Chairman, Donald S. Farner, Donald F. Hoffmeister

Volume 1, No. 3, pp. 93-96

Published August 15, 1946

UNIVERSITY OF KANSAS
Lawrence, Kansas

PRINTED BY
FERD VOILAND, JR., STATE PRINTER
TOPEKA, KANSAS
1946

21-2764

The Tadpoles of Bufo cognatus Say

By

HOBART M. SMITH

The tadpoles of this species have been described by Bragg (Copeia,
1936: 14-20, figs. 1-13; Amer. Midl. Nat., 18:273-284, figs. 1-5,
1937). The drawings and descriptions of the mouthparts, however, appear
to have been taken from dried, or immature, or transforming
individuals, for they do not agree among themselves nor do they agree
with larvae obtained in the field and now in the Museum of Natural
History of the University of Kansas.

At hand are two series of tadpoles of this species; one series was
collected July 2, 1938, 1.5 miles east of Meade County State Park,
Kansas, and the other lacks data. The second lot contains numerous
sizes of tadpoles from 14 mm. to 31 mm., and several transforming
specimens which clearly possess the pattern so typical of this species.

[Illustration: FIG. 1.--Mouthparts of a tadpole of _Bufo cognatus_.
Disk widely spread. Approximately x 45.]

Mouthparts in both series (consisting all told of about 200 specimens)
are fairly constant except in the transforming and extremely young
specimens. The accompanying figure shows them as seen with the mouth