14 REV. R. T. LOWE'S SUPPLEMENT TO HIS 



lower jaw, in favour of the designation which I find this group of fishes has received 

 from Mr. Swainson whilst this paper has been going through the press. 



Fam. Salmonid^. 



SCOPELUS MADERENSIS. 



A small dark mulberry-coloured fisli, which might easily be taken for the fry or young 

 of Poniatomus telencopus, Risso. The dark vinous-coloured ground is concealed by very 

 large deciduous platinum-like scales. The only individual which has yet occurred was 

 three inches long. It approaches very near to Sc. Humboldti, Risso, Hist. iii. 467. 

 (supposed to be identical with Pennant's Argentine, Yarr. 11. 94.), and has the row of 

 larger silver dots, or pits, extending forwards from the root of the caudal fin along the 

 ventral line : but it disagrees remarkably with the generic characters assigned to Sco- 

 pelus by Cuvier, R. An. 2nd Ed. ii. 314, in having both the palatines and tongue acu- 

 leate with teeth. 



The fin-formula in the Madeiran fish was 



1st, D. 3 -|- 10 ; 2nd, D. 1 club- or feather-shaped ; 



A. 2 + 12 ; P. 13 ; V. 1 -I- 7 ; C7 + ^ + ^^• 



6 + l + VIH. 



Gen. Alysia. 



Corpus subelongatum, compressum ; dorso postice ventreque spinoso-serratis. Rostrum 



brevissimum, ore rictuque magnis, hoc pone oculos diducto. Dentes minuti, tenues ; 



in maxiUa inferiore, Vomere, et Palatinis scobinati. Lingua postice lateribus subacu- 



leolata. 

 Squama magnje, baud deciduse, scabrse ; squamis linese lateralis latissimis, maximis, 



scutellatis, s. per totam longitudinem loricato-imbricatis. 

 PinncB ventrales sub apice pinnarum pectoralium sitae. Dorsales duse ; prima inter 



Ventrales et Analem posita ; 2'*'' ad finem anaUs, rudimentalis. Pinna caudalis minima, 



furcata. 



Alysia loricata. 



The spinoso-serrate ventral and hinder part of the dorsal lines, together with the pe- 

 culiar scales of the lateral line, appear to forbid the blending of this interesting little 

 fish with the Cuvierian genus Aulopus, as defined in the R. Anim., Ed. 2. ii. 315, though 

 they have many characters in common. The Maderan fish is no less rare than elegant. 

 It scarcely exceeds two inches in length. The back is a deep blue; the sides bright 

 silvery or platinum ; and a row of dead-silver dots or pits extends along the ventral line, 

 as in the Scopelus above described. The fin-formula is 



1st, D. 2 -I- 10 ; 2nd, D. rudimentary ; A. 2 -f 21 (-1-8 detached depressed points 



4-fT+Tx. 



or spines) ; P. 15 or 16 ; V. 1 -|- 5 ; C. 



3+I+Vin. 



