158 



THE ANATOMY OF VEETEBEATED ANIMALS. 



in tlie Siluroids, by sutural union. By its inner surface it 

 gives attachment to tlie coraco-scapular — and sometimes 

 above them, to a stylif orni bone which extends back among 

 the lateral muscles — the post-clavicula (jy.cl.). 



Attached to the dorsal end of the clavicle, there is 

 usually a second much smaller bone, the supra-clavicula 



Fig. 49. 



FijT. 49.— The bones of the pectoral arch and fure-limb of the Pike 

 (Esox liicius). A, a semi-diairrammatic view of these bones, to 

 show their relative natural position. The clavicle (C/) is supposed 

 to be transparent. S.cl. supra-clavicula ; p.cl, post-clavicula ; c, d, 

 the posterior and anterior ends of the outer margin of the scapulo- 

 coracoid. — B, the scapulo-coracoid and limb separate and on a larger 

 scale ; S^p, scapula ; Ci; coracoid ; a. basal cartilages ; h, fin-rays ; 

 c corresponds with c in the foregoing figure. 



(S.cL). and this is very generally connected with the skull 

 by a superficial membi-ane bone, the post-temporal, which, 

 in front, becomes forked, and attaches itself by one prong 



