33 



the same place and near the same time. The size, color, etc., would 

 indicate that they belong to the same individual. Accompanying the first 

 specimens were many bones of individuals of different sizes, which I 

 learn from the the finder were all taken from within a short distance of 

 each other. Many of them belong to the same species, as the jaws and 

 teeth, and I have described as such those that relate properly to them as 

 to size, mineral appearance, etc. 



The smaller specimens belong also to several individuals, and possibly 

 to more than one species. I describe them together, but regard the 

 astragalus as the primarily distinctive bone. 



BATHMODON SEMICINCTUS. Cope. 



Proceedings American Philosophical Society, 1872, p. 420. Loxolopho- 

 don, semicinctus, Cope, 1. c. 



The tooth on which this species was based shows a near relation to the 

 corresponding one of B. radians. 



BATHMODON LATIPES. Cope. Species nova. 



Established on atlas axis, dorsal and lumbar vertebra, scapula, hume- 

 rus, phalange, femur, astragali, etc., of a specimen found with the B. 

 radians. 



The transverse process of the atlas is stouter and less flattened at the 

 base than in B. radians. The axis is but little oblique and has a low 

 obtuse hypapophysis below. Its form is much as in the larger species, 

 being rather elongate, but shorter than in Rhinocerus and other Perisso- 

 dactyles. The dorsals and lumbars are short and plane ; the former are 

 obtusely, the latter acutely keeled below. The head of the femur has 

 no ligamentous fossa. The astragalus is considerably broader than long, 

 the apex turned outwards in front of the inner malleolus, being especially 

 produced. The tibial face is concave transversely, and convex antero- 

 posteriorly at the front, plane behind. There is a posterior submarginal 

 foramen, which is not bridged over in one specimen, producing a deep 

 notch. The navicular facet has considerable transverse extent, and the 

 anterior side of the bone is more transverse than in B. radians. The 

 calcaneal facets are diagonally opposite to each other ; the outer is sub- 

 round, the inner anterior narrow and transverse. It differs in the two 

 specimens, the perforating foramen not being bridged over in the one (the 

 type) with the similar posterior interruption described above. This may 

 be due to fracture. The only ungueal phalange has the articular face 

 not quite sessile on the transverse rugose free extremity. 



Measurements. 



M. 



Diameter diapophysis atlas (fore and aft) 0.036 



" axial facet of " 034 



" centrum axis (transverse) 080 



" (vertical) 037 



Length " "to odontoid 057 



