278 



'05. The influence of the environment on the early stages of eoibiyonic 

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Wilson, W. P., "!H. The inlluence of external conditions on plant life. 

 Biological Lectures, 1803, pp. 103-185. Boston, 1804. 



WiXDLE, B. C, '80. Report on a discussion on the transmission of acquired 

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'80a. A note on the riui.'<cului> stentalis. Anat. Anz., IV, pp. 715-719. 



'00. On some cranial and dental characters of the domestic dog. Proc. Zool. 

 Soc , Jan. 1890. 



'00a. Terratological evidence as to the heredity of acquired conditions. 

 J. Linn. Soc. Zool., XXIII. pp. 448-502. 



WoRTMAX, J. L., '03. A new theory of the mechanical evolution of the 

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Zenkeck, J., '04. Die Anlage der Zeichnung u. deren physiologische 

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VARIATION OF NORTH AMERICAN FISHES. II. 



The Vari.\tion of Etheostoma Caprode? Rafinesque in Turkey Lake 

 AND Tippecanoe Lake.® By W. .J. Moenkhaus. 



Introduction.- — In a former paper on the ''Variation of Etheostoma caprodeg 

 Rafinesque" (Am. Nat.. Aug., 1804), I determined the geographical distribution 

 of this fish and the geographical variation of its color-pattern and fins. 



It was found that this species inhabits practically all the fresh waters of the 

 Atlantic slope east of the 100th meridian and west of the Alleghany Mountains. 

 Its northern and eastern limits are the Great Lakes and Lake Champlain ; its 

 southwestern, the Rio Grande in the extreme southern part of Texas. 



The following conclusions were reached among others : 



1. Each river system from which specimens were examined jjossesses a pe- 

 culiar variety. This peculiarity is most striking in the color-pattern. 



2. All the variations are continuous. 



■■■Contributions from the Zoological Laboratory of the Indiana University under the 

 direction of C. H. Eigenmann, No. 18. 



