146 



lantic coast of Northern Africa. The following apparently new spe- 

 cies contained in it were pointed out by Mr. Bennett. 



Polynemus Artedii. Pol. digitis quinque corpore longioribus ; 

 pinna anali elongatd : pinnis dorsalibus, caudali, pectoralique 

 nigro-irr oralis. 

 D.7,-^. P. 15. A.W- 

 Pol. quinquarius? Linn. — Seba, Thes. torn. iii. pi. xxvii.^f. 2. 

 Longitudo corporis, 6^-; pinnae caudalis, 1\\ digitorum 3tii 



4-tique, 16 ; latitudo corporis l£ unc. 

 Except in the elevation and triangular form of the first dorsal fin, 

 in which it agrees with the other Polynemi, this species differs in no 

 respect from the fish figured by Seba, and described by Artedi in the 

 text of the ' Thesaurus * under the name of Pentanemus. On this 

 Linnaeus established his Pol. quinquarius. MM. Cuvier and Va- 

 lenciennes have recently united the latter with Pol. paradisceus, 

 Linn., to form their Pol. longifilis : a union to which they were 

 induced by a belief that Pol. quinquarius was founded on a mutilated 

 specimen, in which two of the free rays on each side had been re- 

 moved, — their extensive inquiries having failed in procuring for 

 them any Polynemus possessing free rays exceeding the body in 

 length and only five in number. There is, however, another marked 

 distinction in Seba's figure in the length of the anal fin, which is 

 nearly twice that usual in the genus, containing almost double the 

 usual number of rays. In this respect and in the number and length 

 of the free rays beneath the pectoral fin, Pol, Artedii agrees with 

 the figure and description of Pol. quinquarius, with which, but for 

 the difference in the form of the first dorsal fin, it must have been 

 regarded as specifically identical. Its distinction from the other 

 known species is easy, on account of the very remarkable charac- 

 ters just noticed. 



Fam. ScombridjE. 

 Genus Apolectus. 

 Corpus elongatum, subalepidotum. 

 Linea lateralis aequaliter squamata. 

 Pinnce dorsales approximate, subcontinuae. 

 Denies maxillares fortes, conici, distantes. 



Genus Cybio, Cuv., maxime affine: vix differt nisi dentibus coni- 

 cis dissitis. 



Adjungendus videtur Scomber maculatus, Mitchill, Trans. New 

 York, vol. i. p. 248. pi. vi. f. 8. 



Apolectus immunis. Ap. immaculatus, supra pallide cccruleus, 

 ad later a et infra argenteus; pinna dor sali prior e antice air a. 

 D. 18, 24 (8 spur.). A. 23 (8 spur.). P. 19. 

 Nomeus maculosus. Norn, argenteus, dorso late, lateribus, pin- 

 nisque nigro maculatis : pinnis ventralibus nigris. 

 D. 10, 28. A. 27. P. 20. V. £. C. 19. 

 Picturaabunde differt a figura Scombri maculati, Mitch., qui, rao- 

 nente cl. Cuvierio, idem ac Nomeus Mauritii, Cuv., (Gobius Grono- 

 vii, Gmel.). 



Exoccetus pinnatibarbatus. Exoc. pinnis pectoralibus analem, 

 ventralibus caudalcm attingentibus ; dorsali altd (dcpressA cauda- 



