1866.1 HUXLEY TELERPETON ELGINEN-SE. 81* 



O'Oo in. broad. These ribs are somewhat expanded at their proximal 

 ends, but show no traces of a division into distinct capitula and 

 tnbercula. 



On the left side the remains of several vertebral ribs, and a few 

 slender grooves apparently produced by sternal ribs, are to be seen. 

 The ribs of the four or five posterior dorsal vertebrae are exceedingly 

 short ; but there appear to be no proper lumbar vertebrae, in the 

 sense of praesacral vertebrae with anchylosed or abortive ribs. 



The cast of the only sacral vertebra which is visible shows it to 

 have been possessed of a stout lateral process, 0*16 in. long, and 

 0*07 in. thick, which abutted against the ilium. 



The ilium occupies such a position as to hide any other sacral 

 vertebra which may have existed : but there could not have been 

 more than one additional vertebra in this region of the spine. The 

 eleven anterior caudal vertebrae occupy a space of 1-6 in., which 

 gives rather more than 0-14 in. for the length of each vertebra. 

 The anterior five or six possess slightly curved transverse processes, 

 which taper to theii' extremities, and attain a length of 0*3 in. 



The neural spines and subvertebral bones of the caudal vertebrae 

 are not clearly exhibited. 



Three vertebrae, following the tenth caudal, are represented by 

 cyliudroidal holes in the matrix, as much as 0-25 in. deep ; and 

 beside these lie imperfect impressions of yet two other elongated 

 vertebral centres. 



The left shoulder-girdle is displayed on the upper surfaces of the 

 first and second fragments, the line of breakage between which has 

 in fact passed through this system of bones (fig. D). 



The scapula was 0-8 in. long ; and the cast proves that its proxi- 

 mal, or glenoidal, end was thick and prismatic, and slightly expanded 

 anteriorly. Distally, or dorsally, it passes into a broad and flattened 

 blade, not more than 0-2 in. wide, which is abruptly truncated at 

 its vertebral end. 



The coracoid must have been a very stout bone, nearly 0*9 in. in 

 antero-posterior, and 0*5 in. in transverse measurement. Of its 

 three margins the internal presents a convex, the anterior and the 

 posterior a concave curvature. It appears to have possessed a consider- 

 able fenestra in the inner moiety of its anterior half. 



An obscure impression, leading to a triangular hole, which is the 

 transverse section of a cavity at least 0-2 in. deep, in the matrix, 

 I believe to represent the cast of a clavicle. There is a correspond- 

 ing hole and cavity in the counterpart fragment of the fossil, 

 whence I conclude that the clavicle must have been about half an 

 inch long. 



The impression of the head of the humerus lies in its natural 

 relation to the scapula and coronoid. It was 0-4 in. wide, and had 

 a strongly marked deltoid ridge, or outer tuberosity, which projected 

 downwards. In the counterpart the rest of the cast of the humerus 

 is preserved, and proves that bone to have had a length of about 

 0-85 in. The middle of its shaft is not more than 0-2 in. wide, 

 but its distal end expands to the -width of the head. 



