26 
The transverse expansion at the base of the neck is most 
marked on the left side in which the preservation is most 
distinct, and is such as. would correspond with the width of the 
hones of the shoulder girdle and the attachment of the limbs. 
The body in its relative shortness as compared with the 
neck, in the convexity of its sides, and in transverse breadth, 
has such proportions as might be anticipated in a young 
plesiosaur. It measures rather less than an inch where widest 
in the middle, and f of an inch in front of the hind limbs. 
The preservation of the external surface is unfortunately 
somewhat imperfect. 
The limbs are imperfectly displayed, those on the left side 
are most distinct. Both the hind limbs appear to be indicated, 
but the form is not shown, and is so different from that 
indicated in another specimen, as to suggest the idea that their 
lateral edges only are seen. The measurement between the 
limbs on the left side is about JJths of an inch. - The form of 
the body appears to be depressed as though it were not more 
than half as deep as wide. 
Behind the hind limbs the body curves downward rapidly 
and rapidly contracts from side to side, terminating in a tail 
which is not more than , 8 0 ths of an inch long, and is therefore 
shorter in proportion than the tail in an adult plesiosaur. 
There is a manifest angular ridge in the median line upon 
the tail, although its external surface is lost. The form of the 
tail as exposed is a triangle, which is longer than wide, with 
its lateral contours continuous with those of the sides of the 
body behind the hind limbs. 
II. 
The specimen numbered 2 is apparently somewhat larger 
than the example just described, and appears to measure 6 
inches in length. This is the individual over the neck of 
which, the specimen numbered 1 appears to extend, so that the 
neck of No. 2 passes under the middle of the abdomen of 
No.- 1, and extends on its opposite side. It must however be 
stated that there is no definition of the head in this individual; 
and that the anterior part of the neck does not so manifestly 
pass continuously under the body, though this may result from 
the way in which that side of the specimen has suffered 
