184 NOTES ON THE SALMO SALAR SPECIMEN—MORROW. 
another process having a cartilaginous attachment to it, this 
process is somewhat irregular in shape and rough upon its edges 
for the attachment of the tissue which unites it to the bones of 
the skull. It penetrates beyond the marginal point of the pre- 
operculum and its tissues are connected with the edge of the 
supporting bone above the fleshy cheek behind the eye, in 
shape it is nearly straight, slightly curved laterally ; from its 
junction with the supra-clavicle to its point it is about 
1; inches in length; on the anterior edge of its projection 
or root this small bone is attached by cartilage to the bone which 
supports the operculum. To enable you to understand this june- 
tion I have cut off a small portion of bone from the skull leaving 
the cartilage entire. Let us turn this bone over and look at its 
inner face, at the point of junction of the small bone already 
noticed as supporting the upper portion of the supra-clavicle and 
diverging from it dorsally in a line with the centre of the root 
of the small or supra-clavicular bone is a shoit bone having a 
very strong ligament connecting it with the skull bone at the 
base of the brain, (it is this short bone which makes in the Cod 
fish the forked supra-clavicular bone, but it differs from the sal- 
mon inasmuch as it is throughout a bone and is not a representa- 
tive of the process in the salmon which springs from the supra- 
clavicle,) a pin in the skull of the large skeleton marks the 
point of connection. 
Of the middle piece or inter-clavicle there need not much be 
said, it is as the supra-claviele thin and flat and its upper end is 
inserted under the edge of the supra-clavicle, on its anterior face 
for nearly 3 of an inch, posteriorly it has a thickened striated 
edge; its lower extremity which is flat, thin and oval shaped over- 
laps and is attached to the clavicle, presenting the appearance of 
nearly concentric plates, the growth of which has taken place 
apparently from the inner side. In specimens freshly taken this 
bone has considerable freedom of motion upon the clavicle. 
The Clavicle, Coracoid, Scapula, &e. 
It is almost impossible for me to describe the shape of the 
clavicle and the bones connected with it, but I will make the 
attempt. 
