l6o THE COAL MEASURES AMPHIBIA OF NORTH AMERICA. 



Measurements of the Specimens of Sauropleura pauciradiata Cope. 



mm. mm. 



Length of davide, left 43 Space between ridges a 



Width of davicle 25 



I^r[t specimen No. 86S7 G and obverse (ij) described as Colosteus scutellalus Newb. 



ram. mm. 



Length of specimen, as preserved 117 Width of clavicle 18 



Width of specimen, maximum 61 Length of interclavicle 40 



Length of fore arm Width of interclavicle 23 



Length of hand 10 Width of a ventral scute 1.5 



Length of metacarpus 5 Length of scute from angle to end 35 



Length of clavicle 40 



SkuU No. 8666 C, plate xxiii,fig. i (Cope, 123), Colosteus scutellalus. 



mm. mm. 



Length of skull, as preserved 65 Width of mandible, maximum 10 



Width of skull 40 Length of longest tooth 5 



Diameter of orbit 6 Width of tooth at base 1.5 



length of mandible 70 



SkuU Nos. 86o2 G and 860S 0. 



inin. nun* 



Length of skull, as preserved 50 Diameter of orbit 15 



Width of skull 60 Length of mandibular tooth 4.5 



Other specimens associated with this species: Nos. 8668 G, 8674 G, 8554 G, 

 8661 G. All specimens in the American Museum and all from Linton, Ohio. 



SCUTES OF SAUROPLEURA. 



There are found associated with the remains of the genus Sauropleura a num- 

 ber of heavy scutes or scales. There are three of them on the same block as the 

 sj)ecimen of S. longidentata and are provisionally referred to the genus. There 

 are a number of scutes preserved separately, but they agree in their characters 

 with those discovered on the specimens. The scutes are elongate and usually acu- 

 minate at one end and having a broad base at the other. The acuminate end is 

 slightly bent to one side so as to present the appearance of a hook. Others are 

 shield-shaped and are quite large, while the majority of the hook-shaped ones are 

 small. The shield-shaped elements have a rounded boss near the center of the 

 plate and the edges are imbricated. Their nature and their proper location on the 

 animal are a puzzle. They may not belong to the genus, but have been noticed with 

 the remains of at least 3 species. 



Measurements (in Millimeters) of Scutes Associated with the Specimens of Sauropleura. 



No. 4513 U. S. National Museum: 



Length 27 



Width, maximum 14 



Width, minimum 3 



Scutes associated with the specimen of Sauropleura longidentata: 



Width across base 3 



Width across tip I 



Additional specimens are: Nos. 3, 8673 G and 8470 G, American Museum of 

 Natural History. 



Sauropleura longidentata Moodie. 

 Moodie, Jour. Geol., 17, No. i, pp. 74-76, figs. 18, 19, 1909. 



Type: Specimen No. 8619 G, American Museum of Natural History. 

 Horizon and locality: Linton, Ohio, Coal Measures. 



This species may be distinguished from other members of the genus by the large 

 size and shajje of the cranium (462) and the broad mandible (plate 16, figs. 2, 3) 



