5Q3 



BLACK MACKREL.. 



Scomber Niger. S. nigt r, subtus subargenteus, spinis dorsalibus 



octo, pinna dorsali unica. 

 Black Mackrel, silvery beneath, with eight dorsal spines, and 



single dorsal fin. 

 Scomber niger. Slock. 



LENGTH from two to six feet : habit resembling 

 that of the Pilot Mackrel ; the head being short, 

 and rounded in front : scales middle-sized : head 

 without scales : before the dorsal fin a row of eight 

 strong spines : dorsal fin single, the first part being 

 of moderate length and of a subfalcated shape, 

 suddenly sinking into the remainder, which is con- 

 tinued nearly to the tail : anal fin of similar shape : 

 tail greatly forked : ventral fins white, with black 

 edges : no pinnules either above or below : native 

 of the African and American seas. 



ASCENSION MACKREL. 



Scomber Ascensionis. S. glaucus, spina dorsali recumbcntc. 

 Glaucous Mackrel, with recumbent dorsal spine. 

 Scomber glaucus. Lin. Gmel. Mus. Ad. Frid. 



SECOND ray of the dorsal fin extremely long : no 

 finlets : observed by Osbeck about the Isle of As- 

 cension. 



v.'iv. P. ii. 38 



