ANCIENT SALAMANDERS 101 
from the latter country ‘are very exhaustively described by Dr. 
Fritsch, in a valuable monograph,! with many excellent illustra- 
tions. We have reproduced two of these, the Ceraterpeton and 
the snake-like Dolichosoma?—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 Palzosiren 
Fic. 23.—A snake-like Labyrinthodont, Dolichosoma, 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. 
