100 



NORTHERN ZOOLOGY. 



[48.] 3. Chirus octogrammus. (Cuvier.) Eight-lined Citirus. 



Labrax octogrammus. Pallas, Mem. de Petersb., ii., p. 393, t. xxiii., f. 2. 



This species abounds on the eastern coast of Kamtschatka, and also among the 

 Aleutian Islands. It is named Terpugh, or " the file," by the Russians, on 

 account of the roughness of its scales, and Idgajuk by the Aleutians. 



Jaws rough with crowded teeth, the anterior ones of the lower jaw a little longer. Gill- 

 covers ending in a membranous tip. Gill-membranes separate. Scales middle-sized, very finely 

 ciliated, and exceedingly rough. The top of the head, gill-covers, and suborbitars, are covered 

 with minute scales, as are also the membranes of the dorsal and caudal. There are two 

 porous lines above the lateral line, and two below, the one next the dorsal fin short and incon- 

 spicuous. The dorsal is notched, the posterior part being higher than the anterior one, but 

 both are supported by setaceous rays, as is also the anal fin. The rays of the pectorals and 

 caudal are bifid. The colour of the back is olivaceous, and it is thickly dotted, as well as the 

 sides, with brownish spots ; the belly is yellowish. 



Fins.— Br. 5; P. 19; V. 7;A.24/; C. 15; D. 19/24/ = 43/. 



Total length 



Length of head and gill-cover 

 „ from tip of snout to dorsal 

 „ of attachment of dorsal 





Dimensions. 



iches. 



Lines. 



15 



8 Lenj 



3 



3 



3 



5 



C 



3 



Length from dorsal to caudal 

 of attachment of anal 

 from anal to caudal 



Inches. 

 1 

 4 

 1 



Lines 

 1* 



(Mem. de Petersb.~\ 



[49.] 4. Chirus superciliosus. (Cuvier.) Tufted Chirus. 



" Lebius, Chirus vel Labrax. Steller, Obs. Icthyol. Mser." 



Labrax superciliosus. Pallas, Mem. de Petersb.,i\., p. 388, t. xxii., f. 3. 



This species was taken abundantly off Unalaschka by Billings, who sent many 

 specimens to Pallas. That author has added to his description, Steller's account 

 of the colours of the recent fish, and also some anatomical observations, which, if 

 there be no mistake as to the identity of the species, are incompatible with the pas- 

 sage in the Regne Animal, which denies ceeca to this genus. Steller describes 

 sixteen long pyloric caeca, and two shorter ones. He also says that there is no air- 

 bladder, and that the fish feeds upon crabs and worms. 



