202 Bulletin American Museum of Natural History. [Vol. XIV, 



fits closely to it, a humerus, ulna and radius lying together on the 

 right side associated with a humerus of the left side ; five meta- 

 carpals at some little distance associated with metatarsals and a 

 hind limb of Diplodocus. These bones were considerably scattered 

 and assigned separate field numbers, but they belong in all 

 probability to one individual of medium size. They have been 

 prepared and mounted (Fig. 2) under the direction of Mr. Her- 

 mann and afford for the first time a fine example of the fore limb 

 of this stilted Dinosaur. Although the scapula is inclined back- 

 wards, the upward portion of the blade is 10 feet 6 inches, or 

 3195 mm. from the ground. The scapula is practically identical 

 in measurement with that of the skeleton described in Osborn's 

 Memoir upon Diplodocus. 



The principal measurements (in millimeters) are as follows : 



Scapula, length 1285 



" greatest breadth '. 500 



Scapulo-coracoid conjoined 1650 



Coracoid, breadth from glenoid border 425 



Humerus, length 1080 



" least circumference 470 



Ulna, length S70 



" least circumference 285 



Radius, length 840 



" least circumference 255 



Metacarpals I, II, III, IV, V. 



Proximal facets, antero-posterior. .. . 1056.' 113 76 e. 63 85 



" " transverse 51 64 S3 85 43 



Length 260 290 3 1 5 290 285 



The scapula is very similar in form to that already described 

 by Osborn. The coracoid is short, not yet conjoined to the 

 scapula, and fortunately retains its natural curvature ; on its 

 postero-inferior surface is the rough facet, observed by Marsh, 

 for articulation with the sternal plate. The sternals were also 

 found, but have not been placed in position. The head of the 

 upper portion of the shaft of the humerus is crushed, so that it 

 extends unnaturally beyond the line of the glenoid facet ; the 

 deltoid or lateral crest (processus lateralis) extends well down 

 upon the outer side of the shaft ; distally the shaft terminates on 

 the outer side in a prominent radial condyle which is readily 



^ e = estimated. 



