100 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 (/.:) ; the others are small and five to 

 seven in number. All are grooved for sensory tubes. 



6g. 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 

 with 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 i^ 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 lamina; 

 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. 



