REPTILES. 



61 



CEningen possessed one species of bull-head (Coitus brevis, 

 Ag.) , which possessed a still smaller and thinner body than the 

 species now common in the brooks and lakes of Europe. 



The perch of CEningen (Perca lepidota, Ag.) differs essentially 

 from the common Swiss perch in having only nine instead of 

 twelve to fifteen spines in its dorsal fin. This species has been 

 found in the Miocene of the Gurnigel, which is the only example 

 of an CEningian species of fish being found in any other locality 

 in Switzerland. 



b. Reptiles*. 



The Reptilian fauna of the Swiss Miocene differs greatly from 

 that of the present day. It was certainly much richer in species ; 

 and the species were otherwise distributed in various families, as 

 the following Table will show : 



Forms corresponding to the small salamanders and to the 

 Swiss frogs are wanting ; but toads are met with which it is 



* The species from CEningen have been studied by H. von Meyer in his 

 4 Fossile Saugethiere, Vb'gel und Reptilien von CEningen ' (Frankfort, 1845), 

 and by Winkler, < Tortues fossiles ' (Harlem, 1869). The tortoises of Swit- 

 zerland have been described by Pictet and Humbert in their ( Monographie 

 des Che"loniens de la Mollasse Suisse ' (Geneva, 1858), and those of "VVinter- 

 thur by Dr. Biedermann in his 'Petrefacten der Umgegend von Winterthur/ 

 Heft 1 (Winterthur, 1862). 



