SIVATHEEIUM GIGANTEUM. 277 



The medullary cavity is filled with a solid mass of crystals of 

 carbonate of lime. 



This and the six following specimens, from the Sewalik hills, were 

 presented by Colonel Colvin. — Journ. As. Soc. v. 182. 



No. 341. — Lower end of radius left side, resembling exactly the 

 former, but still more perfect in its articular surface, which is as com- 

 plete as in a recent bone. 



The dimensions are smaller than in the preceding specimen. 



Inches 

 Width of articulating head . . . . . . . . 5-1 



Height of styloid apophysis of ulna . . . . . . . 1'3 



No. 342. — A similar specimen of same side, alike in every respect, 

 except that the portion of the shaft is shorter. 



No. 343. — Another of the same side, agreeing in every respect, 

 except that the shaft of the bone is considerably longer, comprising the 

 lower two-thirds. Dimensions smaller than the two last. Probably 

 belonged to a female. The shaft of the bone, instead of being broad 

 and flat, is compressed laterally, so as to form an angle upwards with 

 considerable depth, showing a somewhat triangular oiitline in section. 



No. 344. — Fragment of lower end of left radius, the outer portion of 

 the lower articulating surface broken off". 



]\fo. 345. — Specimen comprising the inferior third of the right radius, 

 with the carpal bones and upper part of the metacarpus connected 

 together by matrix; the two principal bones being bent, so as to be 

 parallel to each other. The bones are so enveloped by matrix as to 

 present no distinct character ; the core of the metacarpal is divided in 

 section by a vertical plate of bone showing its composite nature. 



Dimensions. 



Inches 

 Width of articulating head of radius partly broken off . . .5-4 

 Ditto of head of metacarpus . . 4-8 



JSTo. 346. — Fine specimen consisting of the left metacarpus perfectly 

 entire, cleared of matrix. The bone corresponds exactly, in the form of 

 its articular terminations, with the same bone in the Gour, but is 

 proportionally shorter, thicker, and broader in its dimensions. The 

 articular epiphyses are synostosed, indicating the animal to have been 

 adult, but probably a female, as it is considerably smaller than 

 No. 345. 



Dimensio7is. 



Inches 



Length of bone . . . . _ 13' 



Transverse diameter of carpal articulating surface . . . .4-3 



Antero-posterior ditto inner side 2-4 



Ditto outer side . . . . . • • • • . 1'8 

 Transverse diameter of inferior articular surface .... 4-3 



The interval between the divisions of the articular ends below is 

 very narrow and the salient ridge between the pulley surfaces very 

 salient, as in Bos. 



No. 347. — Fine specimen comprising the tipper half of the tibia, 

 showing the whole of the articular surface nearly complete ; the form 



