ioo ZOOTOMY. 



grooved for sensory tubes, situated one on either side of the 

 nasal region, to the dorsal side of the parethmoids. 

 . 68. The sub-orbitals (s.or), a semicircular chain of 

 bones, lying beneath the eye-ball : the most anterior of the 

 series is large, thin, and triangular in shape, and is the so- 

 called lacrymal (lc) ; the others are small and five to 

 seven in number. All are grooved for sensory tubes. 



69. Two or three small grooved bones of a similar 

 nature occur in relation to the parotic processes. 



XIV. In the shoulder-girdle and pectoral fin, note on 

 each side 



70. The post-temporal, a forked bone, articulating by 

 the inner and larger of its limbs with the epiotic, by the 

 outer and smaller with the parotic process of the skull. 



71. The supra-clavicle, a stout rod, articulating above 

 wiify the post-temporal, and fitting below by its bevelled 

 inner surface against the dorsal extremity of the clavicle. 



72. The clavicle, a large curved bone, with a thick 

 anterior and a thin posterior border, attached above to the 

 supra-clavicle, and taking a direction at first downwards, 

 then forwards and inwards, so as nearly to meet its fellow 

 of the opposite side in the middle ventral line of the throat, 

 a short distance beyond the uro-hyal. 



In the Haddock the anterior (ventral) portion of the clavicle is greatly 

 thickened. 



73. The post-clavicle, a slender bony rod, connected 

 with the inner face of the clavicle near its dorsal end, and 

 passing backwards and downwards. 



74. The scapula and coracoid, two delicate laminae 

 attached to the inner face of the clavicle : the upper and 

 smaller of the two is the scapula : the lower, of an irregularly 

 triangular form, is the coracoid. 



