350 PALAEOZOIC TIME — CARBONIFEROUS AGE. 



must have burrowed into the interior of the Sigillaria trunk in which it was 

 found. (Dawson.) 



((/.) Insects. — Fig. 602 A, Blattina venusta Lesquereux, from the Coal measures 

 at Frog Bayou, Arkansas. The specimen is one of the wings; and it very closely 

 resembles the corresponding wing of a modern Cockroach (genus Blatta). This 

 is the only insect yet found in the American Carboniferous beds. 



5.Vertebrates. — (a.) Fishes. — Fig. 603 A, Eurylepis tuberculatus Newberry; 

 and fig. 603 B, Ccelacanihus elegans Newberry, — both Ganoids from the Coal mea- 



Fig. 603. 



Ganoids. — Fig. 603 A, Eurylepis tuberculatus ; 603 B, Ccelacanthus elegans. 



sures at Linton, Ohio. The latter is remarkable for not having the tail hetero- 

 cercal, although strictly vertebrated. The genus Eurylepis of Newberry is a 

 group of small but highly-ornamented fishes, allied to Paleeoniscus, but distin- 

 guished by the high side scales. Other Ganoids occur of the genera Megalich- 

 thys, Palseoniscus, Amblypterus, Pygopterus, Rhizodus, and Ccelacanihus, in the Coal 

 measures of the United States and Nova Scotia. 



Among Selachians the following European genera have been recognized in 

 the Coal-measure limestones of Pennsylvania, Ohio, Indiana, Illinois, etc., — the 

 species being generally distinct from those of the Old World : — 1. Cestracionts : 

 genera Ctenoptychius, Petalodus, Helodus, Cochliodus, P&cilodus, Pleuracanthus, 

 Ctenacanthus, and Oracanthus. 2. Hybodonts : genera Diplodus and Cladodus. 

 (Newberry.) 



(b.) Rep>tiles. — Amp>hibians. — Fig. 604 A, Ranicep>s Lyellii Wyman, found by 

 Dr. Newberry along with fossil fishes at Linton, Ohio. According to Wyman, 

 it has many of the characteristics of the Batrachians (frogs), or tail-less Amphi- 

 bians (whence the name, signifying Frog-headed), but appears to be interme- 

 diate between that group and the Salamander tribe (tailed Amphibians). No 

 scales have been observed : if possessing them, like the species of Nova Scotia, 

 it would rank among the Labyrinthodonts. 



Baphetes planiceps Owen, is the name of an Amphibian from Pictou, Nova 

 Scotia. The specimen is a portion of the skull, seven inches broad, — enough to 

 show the great size of the animal. According to Owen, it was probably a scale- 

 covered and voracious animal of the Labyrinthodont tribe. 



Dendrerpeton Acadianum is a smaller and narrower reptile from Nova Scotia, 

 and one of the number found in the stump of a Sigillaria at the Joggins, as 



