253 
lections formed with so much scientific ardour and discrimination by 
His Imperial Highness the Due de Leuchtenberg, during his late six 
months’ residence in Madeira. 
Fam. Balistid^e. 
16. Monacanthus auriga. Hispidus, cauda utrinque dense 
hispido-villosa ; pallide olivaceo-murinus , sublutescens, fusco- 
lutoso-maculatus v. interrupte longitudinaliter subfasciatus ; 
fasciis luteis inconspicuis evanescent ibus 3 v. 4 ab oculis antice 
oblique radiantibus; radiis 1 v. 2 anticis dorsalis primee ali- 
quando in filamentum productis. 
l ma D. 1 ; 2 da D. 31 ; A. 30 v. 31 ; P. 13 y. 14; C. l+X. + l. 
From eight to ten or eleven inches long. On each side, towards 
the base ot the caudal fin, is an oblong patch, like plush or velveteen, 
of close thickset hairs or bristles. The occasional production of the 
second or first two rays of the second dorsal fin is perhaps sexual. 
Such examples have the muzzle rather longer and more produced be¬ 
fore the eyes than those which have not the elongated dorsal fila¬ 
ment. They are perhaps the M. filamentosus of M. Valenciennes, 
to whose figure and description, however, in MM. Webb and Berthe- 
lot’s c Canarian Fishes,’ I regret I have not access. 
Several examples have occurred, chiefly in the autumn, during the 
last five or six years, of this previously in Madeira unobserved or un¬ 
recorded species. 
SQUALID JE. 
Fam. Alopecid.e. 
17. Alopias vulpes, Buon. ( The Fox Shark, Yarr. ii. 379.) 
An example occurred this spring of unusual size, measuring eighteen 
feet in length, of which the tail was ten feet. The skin was preserved 
by the Due de Leuchtenberg. 
Fam. Spinacid^e. 
18. Centrophorus squamosus, Miill. und Henle, p. 90, with a 
figure. 
The Ramudo or Raimudo of Madeira, not unfrequently taken off 
the Dezertas at a depth of twelve or fourteen “linhas,” i. e. from 350 
to 400 fathoms, belongs apparently to the above species, the habi¬ 
tat of which was unknown to its describers, MM. Muller and Henle. 
I have only examined female examples, and the fishermen profess 
themselves to be entirely unacquainted with the male, which I have 
however formerly (March 10, 1838) once seen, though without oppor¬ 
tunity for a close or accurate examination, and so perhaps without re¬ 
marking any spine near the tips of the claspers or ventral fin-append¬ 
ages. The individuals examined were five or six feet long, but the 
fish is said to grow to a much larger size. 
Madeira, May 25, 1850. 
