158 THE COAL MEASURES AMPHIBIA OF NORTH AMERICA. 



The interclavicle is diamond-shaped, with surface punctate and edges radiately 

 grooved at a distance of 1.5 mm. from the edge. The hand on the right side of the 

 specimen contains 3, 3, 3, 6, 3 phalanges. The vertebras are all imperfectly preserved. 



Other specimens of this species are 2567 (48), 8376 G, 8704 G, American Museum 

 of Natural History. Coal Measures of Linton, Ohio. Collected by Dr. J. S. New- 

 berry. 



Sauropleura newberryi Cope. 

 COPE, Geol. Surv. Ohio, n, pt. n, p. 404, pi. xxxvii, figs. 2 and 3; pi. xli, fig. 5, 1875. 



Type: Specimen No. 8612 G, American Museum of Natural History. 



Horizon and locality: Linton, Ohio, Coal Measures. 



The type specimen of the species exhibits a portion of the posterior part of the 

 skull, a considerable part of the body, with the fore limbs and abdominal scutellae. 

 No vertebras can be definitely discovered and the ribs are not distinctly visible. 

 The cranial fragment is the upper surface of the tabulare and adjacent elements, 

 and a broad band of the posterior parts of these is seen to be smooth, and is pre- 

 ceded by a slightly roughened surface. The abdominal scutas are diamond-shaped, 

 and are thin and light, not massive, as in S. scutellata, and are sometimes marked 

 with a median longitudinal keel. The fore limb is large, especially the humerus, 

 which is much dilated distally, and has a strong crest on the outer side from near 

 the proximal end. The ulna and radius are much shorter, and more dilated prox- 

 imally than distally; they are well separated. No phalanges are preserved.. 



The species is represented by other specimens, all of which are unsatisfactory 

 in determining the structure of the form. A skull, apparently complete, is crushed 

 out flat, so that little can be said of structure. The teeth are rather long, straight, 

 acute, and striate at the base. The orbits are long and narrowed in front. 



MEASUREMENTS OF SAUROPLEURA NEWBERRYI COPE. 

 (.No. 8612 G, and two unnumbered specimens, American Museum of Natxiral History.) 



mm. mm. 



Length of humerus 35 Width at anterior angle of orbits 40 



Proximal width of humerus 8 Interorbital space 13 



Distal width of humerus 14 Width of orbit 13 



Length of ulna 19 Length of orbit 27 



Proximal width of ulna 8 Length of a maxillary tooth 4 



Posterior width of skull 67 Diameter of same at base 2 



Sauropleura pauciradiata Cope. 



COPE, Trans. Am. Phil. Soc., xv, p. 275, 1874. 



COPE, Geol. Surv. Ohio, n, pt. n, p. 408, pi. xl, figs. 1-2, 1875. 



Type: Specimen No. 8671 G, and obverse, American Museum of Natural 

 History. 



Horizon and locality: Linton, Ohio, Coal Measures. 



The species was founded on a median and a lateral plate of 2 individuals. The 

 clavicle is here associated with S. scutellata and the interclavicle thus remains as 

 the type specimen. There are other remains associated by Cope with S. scutellata 

 which are here shown to have closer affinities with the S. pauciradiata. 



The clavicle is a right-angled triangle, the inner and thin edge concave poste- 

 riorly, the posterior convex. The ridges and grooves are well developed on the 

 specimen. The visceral side of the element is smooth. 



