Cope.] -^1-^ [April 15, 



Measurements. M. 



Lengtli of rib on curve on inner side 276 



" " chord of rib 250 



Width of rib near proximal end 090 



" " ' " distal end 074 



Thickness of rib at proximal end 005 



" " middle 014 



" " scuta at proximal end 005 



" " " middle Oil 



" " " distal end 008 



Average diameter of fossa; of do 007 



The femur is quite characteristic. The long axes of the extremities 

 form an angle of about 45° to each other. The shaft is incurved from the 

 third trochanter proximad, and is expanded more externally than inter- 

 nally at the distal extremity. The proximal extremity is rhomboid in out- 

 line ; the internal border convex, the anterior concave, the posterior less 

 concave, and the postero-exterior nearly straight, and joining the anterior 

 by an acumination with obtuse apex, which represents the great tro- 

 chanter. Surface of head, flat-convex. The junction of the internal and 

 external posterior faces is marked by a convexity ; and the shaft below 

 the external posterior face is longitudinally concave. The third tro- 

 chanter marks about two-fifths the length of the shaft, and is quite prom- 

 inent. It is convex externally, and concave internally. Below it the 

 section of the shaft is a transverse oval, wider exteriorly. The condyles 

 of the femur are considerably expanded transversely, the external being 

 the most produced. The rotular groove is shallow but distinct. The ex- 

 ternal condyle, as already remarked, has a distinct postei'ior lobe, which is 

 separated from it externally by a large ? ligamentous fossa within the 

 bonndary of the articular surface. This posterior lobe is well within the 

 exterior border, and bounds the intercondylar groove on the external side. 

 It presents posteriorly, and is narrowed and obtuse. A corresponding 

 part of the internal condyle presents posteriorly also. 



Measurements of femur. M. 



Total length (axial) 230 



Diameters of head I anteroposterior (greatest) 060 



I transverse (axial) 0d5 



Anteroposterior diameter at great trochanter 031 ' 



_. ^ r. ■, c (anteroposterior 023 



Diameters of shaft \ ^ ^„n 



I transverse OdO 



{transverse 081 

 ( internally 040 

 anteroposterior < at groove 032 



(at posterior lobe. . .051 



The parts of this individual preserved indicate an animal of the average 



