ACANTHOPTERYGII. SCOMBRW.E. 



TAB. XX. 



PROMETHEUS ATLANTICUS, Nob. 



Coelko. 



The Rabbit-fish. 



Chab. Gen. 



Corpus subelongatuin, compressum, cum capite laeve, nudum s. squamis inconspicuis, membranaceis, 

 parvis ; postice utrinque ecarinatum. 



Caput elongatum, simplex, inerme. Rostrum productum, maxilla inferiore longiore, apertura 

 branchiali rictuque vastissimis. Operculum et praeoperculum inermia, plana, integerrima. Dentes 

 compressi, ancipites, acuti ; extemi in utraque maxilla uniseriati ; intemis quibusdam antice ad 

 apicem praelongis ; palatinis uniseriatis, parvis ; vomere inermi. 



Pinnaj dorsales duas, numero radiorum subsequali : antica angusta, continua, sequali, longiore ; 

 secunda breviore, triangulari, antice elevata, postice in pinnulas spurias vix secedente ; pinna 

 anali secundae dorsali simillima. Pinnce ventrales rudimentariae, in adulto obsoletffi, ad stipites 

 squamiformes redactse. Pinna caudalis furcata. Membrana branchiostega septemradiata. 



Ohs. — Omnia Thyrsitis, Cuv., pra;ter vomerem inennem, pinnas ventrales in adulto obsoletas, 

 secundamque dorsalem in pinnulas spurias pauciores vix secedentem. 



Pisces oceanici, regionis teniperatae, unicolores, voraces, edules. Dentes maximi, longiores quam 

 in Apluro, Nob. 



P. Atlanticus, Syn. Mad. Fish. 181. 



1™'' D. 18 ; 2<la D. 3 + 16 v. 17 + II. ; A. 1 v. 2 + (2 4- 14 + II.) ; V. I ; 



P.14;C.^-'^ + ^- + ^"^- 

 ' 4 V. 5 + I. + VII. 



M. B. 7 ; Sq. lin. lat. indefinitae. Vert*. 20 abd. -f 14 caud. = 34. 



Longit. = 1^ — 2i ped. =r 6 — 7 X alt. 



Tempus, se state. 



Locus, in imo profundiore : vulg. 



The genus Gempyhis was originally constituted by Cuvier in the 

 Regne Animal for the sole reception of the Scomber serpens of Solander ; 

 the " Serpens marinus compressus, lividus" of Sloane's Natural History 

 of Jamaica, t. 1. f. 2. Although this fish appears more properly to be 

 a West Indian species, the individual described by Solander was taken 

 near the Canary Islands : which renders its occurrence in Madeira by no 

 means improbable. 



In the eighth volume of the Histoire Naturelle des Poissons, by 

 MM. Cuvier and Valenciennes, this genus (Gempj/lus) reappears, with 

 the addition of the three following species : viz. G. coluber, Cuv. and 



VOL. I. 



