Prof. M'Intosh's Notes on the Tunny. 327 



showing evidences of friction, were comparativelj little 

 affected, the tips of the pectorals and the caudal rays chieflj 

 suffering. This immunity was probably due to their strength 

 and to the fact that the strong spines of the first dorsal and 

 the whalebone-like stiffness of the second dorsal and the anal 

 only proved impediments and sources of rapid exhaustion to 

 the entangled fish. 



The specimen was of good size, weighing about 6| cwt., 

 and having a total length of nearly 9 feet from tip to tip *. 

 The greatest girth was 6 feet 5 inches, in a line with the 

 second dorsal and slightly in front of the base of the anal. 

 The circumference at the base of the caudal, again, was only 

 11 inches. The other measurements were: — 



ft. in. 



Length from tip of snout to base of tail 7 10 



Length from tip of snout to anterior border 



of first dorsal 2 6 



Length from tip of snout to anterior border 



of second dorsal 4 5 



From tip of mandible to base of pectoral 2 2 



From tip of mandible to margin of operculum 2 S^ 



Antero-posterior margin of gape (superiorly) . . 7 5 



Antero-posterior line to corner of maxilla .... 10 



Vertical gape 8 



Length of first dorsal 1 11 



Height of first dorsal , IQi- 



Length of second dorsal 9 



Height of second dorsal along edge 1 3^ 



Base of pectoral 4| 



Length of pectoral 1 5 



Expanse near tip 9 



Ventral, base to apex 10^ 



Anal, breadth at base 6^ 



Anal, base to apex 1 4 



Expanse of caudal 2 10 



Diameter of exposed region of eye, horizontal . . 2f 



Diameter of exposed region of eye, vertical. ... 2^ 



The colour of the dorsum was blackish, with hardly a tinge 

 of bluish. The sides were greyish and the under surface 

 white. No trace of stripes occurred in this example. The 

 first dorsal had its spines black and the web dark brown ; 

 the second had its basal portion black and its apex yellowish. 

 The pectorals were black, while the ventrals had the upper 

 surface dark reddish brown and the under silvery, with brown 

 between the rays ; the edges were dark. The anal was 

 silvery, with the anterior edge black. The finlets (accessory 



* I have to acknowledge the aid kindly given me in measuring and 

 note-taking by Mr. J. Wilson, Demonstrator of Zoology in the University. 



