284 Transactions, —Z oology. 
There are about 70 columns to the square inch in the anterior, about 40 
in the posterior part of the electric organ. 
EXPLANATION OF PLATE XXII. 
Fig. 1. Torpedo fusca, from above (3 nat. size). 
FLA . » The mouth and adjacent parts (4 nat. size); f.n.p., fronto-nasal 
Process ; na, nostril; pt. qu, upper jaw; mck, lower jaw. 
TE » The dorsal fins (3 nat. size); ab, base of 1st and a’b’ of 2nd dorsal ; 
ac, greatest length of 1st and a'/c of 2nd; cd, vertical height of 
Ist and c'd' of 2nd. 
Arr. XX.—On a Specimen of the Great Ribbon Fish (Regalecus argenteus, 
n.sp.), lately obtained at Moeraki, Otago. By T. Jurrery PARKER, 
B.Sc. 
[Read before the Otago Institute, 12th July, 1883,] 
Plates XXIII. and XXIV. 
Tue genus Regalecus includes a few species of highly specialized deep-sea 
fishes, which are among the rarest members of the class. Günther, in his 
“ Catalogue of Fishes,”* describes Six species, some of which are apparently 
founded upon single specimens, while some again are rendered decidedly 
doubtful, owing to the imperfections of the original descriptions and figures, 
and the absence of further Specimens. 
The total number of examples recorded is very small. Günther states} 
that only sixteen captures have been made in England between 1759 and 
1878. Of these eleven at least were referable to a single species, R. 
banksii, while one is assigned to R. grillii. Two or three specimens at least 
have apparently been obtained in Norway (R. glesne), several in the Mediter- 
» 
1877; but of this the only description extant $ is not exact enough for the 
* Vol. ii., p. 307. t “ Study of Fishes," p. 592, 
i Günther, * Cat, of Fishes," iii, p. 307; Hutton and Hector, “Fishes of New 
Zealand,” p. 35. 
|| Trans. N.Z. Inst., vol. X., p. 246, $ Quoted by v. Haast, loc. cit, 
