ANCIENT SALAMANDERS 101 



from the latter country are very exhaustively described by Dr. 

 Fritsch, in a valuable monograph, 1 with many excellent illustra- 

 tions. We have reproduced two of these, the Ceraterpeton and 

 the snake-like Dolichosoma 2 both restored in Plate VII., and 

 their skeletons shown in Figs. 22, 23. Speaking of snake-like 

 forms, it may be mentioned that one of them the Palseosiren 



FIG. 23. A snake-like Labyrinthodont, Dolicfosoma, from Carboniferous 

 strata, Bohemia. (After Fritsch.) 



("ancient siren") is estimated to have attained a length of 

 forty-five feet. Professor Cope has written an account of a 

 number of Labyrinthodonts from the coal-measures of Ohio, where 

 both Professor Newberry and Professor Wyman have obtained 

 specimens. These show great variety of form. Some resemble 



1 Fauna der Gaskohle, Dr. A. Fritsch. 



2 Greek dolichos, long ; soma, body. 



