THE KANSAS UNIVERSITY 

 SCIENCE BULLETIN. 



Vor,. VII , No . 2] January, 1913. [ ^J^xVi^T^ 



A DESCRIPTION OF THE SPECIMENS OF THE 

 TELEOSTEAN GENUS ENCHODUS. 



IN THE UNIVERSITY OF KANSAS MUSEUM. 



BY WTMAN R. GREEN. 



Plates I to XVII. 

 (Contribution from the Zoological Laboratory, No. 201.) 

 A thesis presented to the graduate faculty of the Uiiiversitj' of Kansas in partial fuliill- 

 raent of the requirements for the degree of master of arts. 



THE purpose of this paper is to offer new facts which will 

 aid in the systematization of the knowledge of EncJiodus, 

 and, so far as possible with the material at hand, to furnish 

 anatomical data by means of which future specimens may be 

 classified. Since new specimens are constantly being collected, 

 a revision of the classification is necessary from time to time. 



After writing this paper the author, in company with Dr. 

 R. L. Moodie, spent five weeks in Logan county, Kansas, mak- 

 ing special search for specimens of Enchodua. In one stratum 

 of chalk rock about four feet thick, near Elkader, were found 

 several hundred specimens of Enchodus, consisting of numer- 

 ous operculars, dentaries, palatines, etc., of E. shumardi, and 

 a considerable number of specimens of E. dolichus and E. 

 amicrodus. It is the writer's intention to give these considera- 

 tion in a subsequent paper. No doubt the collection will 

 furnish data for a complete description of the cranial anatomy 

 of E. shumardi, and many new facts concerning the other two 

 species represented. 



The work was undertaken at the instance of Dr. C. E. Mc- 

 Clung, to whom the writer is much indebted for many helpful 



Received for publication June 12. 1912 



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