PERCOIDE.E. 



streaked, producing teeth on the margin, visible under a lens. The length and breadth of a 

 scale, taken from the side, are about equal, being two and a half lines. A linear inch mea- 

 sured on the sides or belly, longitudinally, contains twelve scales, the scales on the belly 

 having, however, less vertical breadth. On the back an inch includes seventeen or eighteen. 

 The asperity of the scales is perceptible to the finger, when it is drawn over them from the 

 tail towards the head. The lateral-line is thrice as near to the back as to the belly, and is 

 slightly arched till it passes the dorsal and anal fins, when it runs straight through the middle 

 of the tail. It is marked on each scale by a tubular elevation, which is divided irregularly by 

 an oblique depression. 



Fins.— Br. 7—7 ; D. 13/ — 1/13 ; P. 14 ; V. 1/5 ; A. 2/8 ; C. 17f. 



The first dorsal commences a little posterior to the point of the gill-cover and to the pec- 

 torals : its fourth and fifth rays are the highest : the first ray is slender and not half the height 

 of the second ; the last ray is so short as to be detected only by a close examination. The 

 second dorsal commences a quarter of an inch from the first, the space between them being 

 occupied by two or three inter-spinous bones without rays : its first ray is spinous, and is 

 closely applied to the base of the second, which is thrice as long, distinctly articulated * and 

 divided at the tip : the remaining rays are all divided at their summits, but at their bases the 

 articulations are obsolete. The pectorals originate opposite to the spinous point of the oper- 

 culum ; they are somewhat longer than the ventrals, which are attached opposite to the 

 second spine of the first dorsal. The anal is rounded : its first ray is one-fourth part shorter 

 than the second, both being spinous: the succeeding rays are articulated and branched, the five 

 anterior ones being longer than the second spine, the others becoming successively shorter : its 

 termination is opposite to that of the second dorsal. The caudal is distinctly forked, its base 

 is scaly, the scales advancing farther on the outer rays and covering one-third of iheir length. 



Dimensions. . 



Inches. Lines. 



Length from tip of upper-jaw to tips of cau- 

 dal fin 8 6 



„ „ end of scales on central rays 



of ditto 7 5 



,, „ end of dorsal and anal fins 6 



„ „ anus .... 5 2 



„ „ origin of first dorsal . 2 6 



„ „ tip of gill-cover . 2 3^ 



,, „ nape ... 1 6 



„ ,, margin of orbit . . 8£ 



„ of orbit 6£ 



„ one intermaxillary . . 9 



„ one labial .... 9| 



„ lower-jaw to its artic. with preop. 1 1 



Our second specimen, nearly of the same size, has only seven vertical lateral bands, with 

 merely a little clouding in place of the intermediate shorter ones. Mr. Todd informed me 

 that some specimens were covered with small black spots. 



* In the Histoire des Poissons, the two first rays of the second dorsal are described as spinous ; but in our two specimens 

 they are as we have mentioned. Our specimens were seen and named by Baron Cuvier. 



B 2 



Length of attachment of first dorsal . 

 „ longest spine of ditto . 

 ,, attachment of second dorsal 

 „ longest ray of ditto . 

 „ attachment of anal . . 



„ longest ray of ditto 

 „ pectorals . . 



„ ventrals . . 



„ lobes of caudal 

 ,, central rays of ditto . 

 Depth of caudal fork, fin extended 

 Height of body at the first dorsal 



Inches. 

 2 



Lines. 

 1 







11 



1 



2 







10 





 



8* 

 11* 



1 



2 



1 



2 



1 



4 







9* 







4 



2 



1 



