Fishes. 1413 



eight above and seven below. The ventral fin resembles the second 

 dorsal. The pectoral fins are small, stout, and placed in a sulcus on 

 each side ; their origins are immediately behind the gill-covers, and 

 anterior to the line of the origin of the first dorsal fin. The abdomi- 

 nal fins are short, stout, and lying in a sulcus : as the . sulci of each 

 communicate, they appear to lie beneath a scale. Around this and 

 reaching to the gill-covers is a patch of scale-covered surface or cui- 

 rass, which extends two inches behind the pectorals and there con- 

 tracts into the lateral line, from whence, in a stitched manner, it passes 

 on to the tail. The other parts of the body are smooth. In colour it 

 was of a dark or black-blue, and the back, though faintly, was defi- 

 nitely, marked with marbled lines and ocellated spots. The number 

 of fin-rays is, D 9; 7. P 21. V 6. A 8. C 15. 



The Long-finned Tunny. 



Long-finned Tunny, Orcynus ala longa. (Cuv.) Two specimens of 

 this fish have been taken in Mount's Bay in a mackerel seine. One 

 is in the Museum of Natural History of Penzance, which was caught 

 several years since ; the other was caught during the present summer, 

 from which the following description is taken. As Mr. Yarrell has not 

 included it in the second edition of his ' British Fishes,' I have 

 sketched a full-sized figure of it, of which the accompanying is a re- 

 duced copy. It was eighteen inches long and five at its greatest 

 depth : its colour was a bluish black, or deep mackerel tint, and plain 

 above, fading below into a pale blue, yellow and white. The shape 

 resembles the bonito. The eye is large and placed over the angle of 

 the mouth : the mouth is rather small, gill-covers smooth. Imme- 

 diately behind the gill-covers, and below and around the origin of the 

 pectoral fin, and along its upper margin extends a corslet, forming a 

 sulcus into which the pectoral fin falls ; it rises also to the back and 



