Zoologi/.} NATURAL HISTORY OF VICTORIA. [_Fhhes. 



large specimen: 1 foot 4 in. 3 lines from snout to tip of caudal fin. Proportional 

 measurements to this length, as 100: length of head, y^'V? snout to eye, xsu; 

 diameter of eye, -y^; space between eyes, ygij; greatest depth of body, yVui snout 

 to origin of dorsal, yV^j; length of dorsal, j*/^^; height of fourth spine, -^^-^jj ; length 

 of caudal lobes, ~^^j^; ditto in middle, yg^; length of pectoral, y'/jj; snnut to ventral, 

 y^ij, snout to anal, y%%; length of ventral, ~^% ; length of third anal spine, y^^; 

 first anal branched ray, yjf%; length of base of anal, y^^-. Average-sized specimen: 

 from snout to tip of caudal fin, 9 in. 3 lines. Proportional rneasurements to this 

 length, as 100: length of head, y-^"ij; snout to eye, y^,, ; diameter of eye, y^jj; space 

 between eyes, yj^; greatest depth of body, -yo%j snout to origin of dorsal, j-,fjy; 

 length of dorsal, y^^^y; height of fourth spine, yy\j; length of caudal lobes, y^g ; 

 ditto in middle, tJ^-; length of pectoral, y tni" ! snout to ventral, y-j/'j,-; snout to anal. 

 y'^f^; length of ventral, y^^; length of third anal spine, y^jj; first anal branched 

 ray, y^; length of base of anal, y^g-^. 



References. — Rich., E. and T., p. 117, t. 54, f. 3 to Q; zzC'entropr isles 

 Georgianus, C. and V., Hist. Nat. des Poiss. v. 7., p. 451. 



The uame Rougliy is popularly given in Victoria to this fish 

 from the remarkable roughness to the -touch which the serration of 

 the posterior edge of each of the very lai'ge scales gives the sui'fiice, 

 although it is really as fine as I figure it. It is somewhat like the 

 Skipjack in usual size, shape, and colour, although the two fish may 

 be distinguished at a glance by the continuity of the spinous 

 and branched rays of the dorsal in the Rougli}^, and the two 

 portions forming distinct fins in the Skipjack, in which also the 

 large teeth of the jaw show the generic difl^erence at once. 



The outer rows of teeth are I'ather smaller than the others in 

 the Roughy or A . Georgianus. 



The very large specimen figured has (as usual) the head and 

 eye smaller in proportion than in the small, usual size, and in it the 

 two spines on posterior edge of operculum are much less marked, 

 the upper one much broader and divided by ridges, and the 

 serration of the preoperculum obsolete. 



Not figured of the colours of life before. 



Explanation of Figures. 



Plate 184. — Fig. 1, very large specimen (over 16 inclies long), about one-half n.atural size. 

 Fig. la, mouth, natural size, showing cardifornj teeth on jaws, vomer, and palatine bones, and 

 sniootli tongue. Fig, lA, scale from lateral line, m.agnified two diameters. Fig. \c. scale from 

 below lateral line, magnified two diameters, showing serrated posterior edge, and absence of fan 

 on anterior covered portion. Fig. 1(/, scales from middle of body, one and a half times the natural 

 size, to show colouring. Fig. le, scales from nape, twice the natural size, to show colouring. 

 Fig. 1/, section behind pectoral. Fig. 1^, section of pedicle of tail. Fig. 2, head of smaller 

 specimen (9 inches long), natural size, to show the two distinct spines on operculum at that 

 size. 



Frederick McCoy. 

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