60 
scapula (cp. fig.). It is these pads that really give articu- 
lation to the fin rays, and are in fact interposed between 
the extremities of the fin rays and the scapulo-coracoid. 
Judging from the analogy of the other fins there may only 
be one pad normally present in the pectoral fin (ep. pelvic 
and caudal fins). 
Fin Rays (/’.2.).—There were eleven fin rays in the 
pectoral fin of the specimen now described. ach ray 
consists of two pieces enclosing a central core of soft 
tissue, as commonly occurs among Teleosts. Hach ray is 
completely segmented for the greater part of its length, so 
that on maceration it falls into a number of very small 
pieces. The two portions of the ray diverge at the 
scapulo-coracoid articulation and embrace its  sub- 
cartilaginous pad as already described. ach portion also 
sends down an articular process, and the two of each fin 
ray clasp the ray immediately below it (ep. fig.), thus 
giving a rigidity to the fin it would not have were the fin 
rays independent of each other. Three of the rays were 
bifurcated at their free extremity in this specimen, and 
where this obtains both halves of the ray split, the bifur- 
cation not being due to the two halves diverging. 
“Inter-clavicle” (/.C/.).—This bone, of questionable 
homology, is described last, as it is doubtful what claim 
it has to the name now given it. It is a median V-shaped 
bone—one limb of the V being horizontal and ihe other 
projecting forwards and downwards. It is situated in the 
muscular cone of tissue passing forwards to the hyoid 
arch from the clavicle in the middle line between the 
basal portions of the branchial arches. The horizontal 
limb is connected anteriorly by four long stout ligaments 
with the inner face of the lower hypo-hyal of each side— 
two ligaments passing to each hypo-hyal. Behind it is 
connected with the clavicle. The arms of the V are 
