94 
Torpedo marmorata, Syn. Mad. Fish. p. 195 ; nec Risso, nec aliorum. 
The closer analysis which, since the publication of the Madeiran 
fish under the name of T. marmorata, Risso, this genus has received 
from MM. Miiller and Henle, authorizes the proposal of it as a di- 
stinct and seemingly new species. It agrees with T. marmorata in 
the shape and relative proportions of the body-disc, the tail and cau- 
dal fin; but the distance from the root of the ventral fins to their free 
hinder edge considerably exceeds the distance from their hinder edge 
to that of the caudal fin; the teeth of the spiracles are not less de- 
veloped in full-grown fishes of a foot and a half in length than in 
younger examples ; and lastly, the colours are liable to no variation, 
and are very different from those of any of the varieties of T. mar- 
morata enumerated by MM. Miller and Henle. I regret I am un- 
able at the present moment to compare the dentition with that of 
T. panthera (Ehr.), Mill. und Henle, Nachtr. p. 193. 
Torpedo hebetans, Syn. p. 195 (Raia hebetans, Mill. und Henle, 
Nachtr. p. 194), in the remarkable notch on each side at the outer 
extremity of the front margins, most resembles T. nobiliana (Buon.), 
Mill. und Henle, p. 128. The disc of the body however was an 
inch broader than long, and the colours were too different in the only 
example (a male) which has yet occurred of the Madeiran fish to 
allow, without more evidence, its junction with this or any other 
Mediterranean species. 
Raia Maderensis, Syn. p. 195. Iam not quite prepared to acqui- 
esce in MM. Miller and Henle’s reference of this to R. undulata or 
mosaica, Auct. (See Miill. und Henle, p. 134, and Nachtr. p. 194.) 
The Madeiran fish is generally more or less completely rough be- 
neath, and always coarsely shagreened all over on the upper surface. 
However, this discrepancy with their account of R. undulata might 
be due to the small size of their specimens; but there is also still 
some further disagreement with regard to the large prickles in the 
middle of the back ; and the colours, which are constant in the Ma- 
deiran fish, agree only with their var. 3. 
Raia oxyrhynchus (Will.), Suppl. Mad. Fish. p. 92 (see Mill. und 
Henle, 2** Nachtr. p. 200) is truly the R. ovyrhynchus, Linn., of 
Miiller and Henle, p. 148, as distinguished from the nearly allied 
R. lintea of Fries. 
PreropLaTea HIRUNDO. P. glabra, supra unicolor hepatina, ros- 
tro vie prominulo, pinnis pectoralibus margine anteriore utrinque 
convexo, dein apices versus concaviusculo, corpore (postice convexo) 
plus duplo latiore quam longo, cauda brevissima dimidio corporis 
breviore, subtus linea elevata carinata, supra simplici, apicem ver- 
sus quadrangulari : tentaculis pone spiracula nullis. 
Trygon altavela, Suppl. in Proceed., p. 92; in Trans. iii. p. 20; 
omisso synon. Cf. Miill. und Henle, 2'** Nachtr. p. 200. 
Judging from MM. Miller and Henle’s account of the species of 
this genus, the Madeiran fish is not only distinct from the Mediter- 
ranean m7epumAareia of F. Columna, to which I formerly referred it, 
but from every other. It differs from Pt. altavela, Miill. und Henle, 
