1138 
SCANDINAVIAN FISHES. 
a league from Christiania, a specimen 16 dm. long was 
caught, according to Collett, on the 1st of February, 
1878. Petersen cites a specimen “nearly 4 Danish 
ells (8 3 / 4 ft-) long,” that Avas cast ashore in December, 
1886, off Tidsvilde on the north coast of Zealand. 
Kroyer Avas besides informed on trustworthy authority 
that the Fox-Shark had once been met Avith on the 
Avest coast of Jutland. 
The flesh of the Fox-Shark is “moderately good,” 
says Doderlein, “though rather hard;” but at Cette 
it is sold, according to Moreau, under the name of 
White Tunny ( TJion blanc). 
Genus ISURUS. 
Peduncle of the tail marked above and below ivith a transverse depression and furnished with a longitudinal Ca- 
rina on each side. Caudal fin crescent-shaped, its length much less than half that of the body. Teeth middle- 
sized, entire-margined , pointed., in adult specimens with a or without lateral cusps at the root. 
By its smooth-margined teeth, in the upper jaw 
too of a narrow triangular form or even subulately 
pointed, this genus is distinguished from Carcharodon, 
the most dreaded Shark of the Mediterranean and the 
tropics, often confounded Avith the Blue Sharks under 
the name of man-eater. In both these genera the 
spiracles, at least of adult specimens, are very minute 
or even obliterated. 
In deference to the current rules of nomenclature 
the generic name of Isurus, coined by Rafinesque in 
1810 c , must supersede the more generally employed 
Lamna, Avhich Avas first proposed by Cuvier in 1817''. 
THE PORBEAGLE (sav. habranden). 
ISURUS COKNUBICUS. 
Plate LI, fig. 1. 
Snout conically pointed , its length e about / 10 (29 — 31 %) of that of the head (to the first gill-opening ), which 
measures about x / 5 (18 — 22 %) of that of the body. Teeth of a narrow triangular form, with a cusp on each 
side of the expanded root. Third tooth, counting from the middle, smaller than those beside it. Distance betiveen 
the pectoral fins and the tip of the snout about i / 5 (80 — 83 %) of that betiveen the first dorsal fin and the same 
point. Coloration above slaty-gray, underneath white. 
Syn. Porbeagle, Borlase, Nat. Hist. Cornwall (1758), p. 265, 
tab. 26, fig. 4. Haae-Brand, Str5m, Sondm. Beskr., part. I, 
p. 281. Touille-Boeuf ou Loutre de mer, Duh., Tr. Peches, 
part. II, sect. IX, tab. XX, fig. 4. Beaumaris Shark , Penn., 
Brit. Zool., ed. 1776, vol. Ill, p. 104, tab. XVII. Le 
Nez, Broosson., Mem. Acad. Sc. Paris 1780 (ed. 1784), p, 
668. Haabrand, Ascan., Icon. Eer. Nat., tab. XXXI. 
Squalus glaucns ( Haabrandsunge ), Gunner., N. Vid. Seisk. Skr., 
Trondhj., vol. IV (Kbhvn, 1768), p. 1 (nom. erron.); 
StrSm ( Haamcer ), N. Sami. N. Vid. Seisk. Skr. Trondhj., 
vol. II (Kbhvn 1788), p. 335, cum tab.; Retz., Fna Suec. 
Lin., p. 307. 
Squalus cornubicus , Gmel., Syst. Nat. Lin., ed. XIII, tom. I, 
p. 1497; Cuv. (subg. Lamna), Regn. Anirn., ed. 1, tom. II, 
p. 127; Nilss. (Squalus), Prodr. Ichtli. Scand ., p. 116; 
Id., Observ. Ichthyol., p. 13 (Disp. Lund, 1835); Yarr., 
Brit. Fish., ed. 1, vol. II, p. 384; Bonap. (Lamna), Iconogr. 
Fna ltal., Pesci, tab. 134, fig. 2; Sundev., v. We. (Squalus), 
Skand. Fisk., ed. 1 , p. 135, tab. 30; Mull., Hle (Lamna), 
Plagiost., p. 67 ; Gray (Isurus), Cat. Chondropt. Fish. 
Brit. Mus ., p. 58; Kr. (Lamna), Damn. Fisk., vol. Ill, 
p. 852; Nilss., Skand. Fna, Fisk., p. 718; Dum., Ilist. 
Nat- Poiss. (su. a Buff.), tom. I, p. 405; Gthr, Cat. 
Brit. Mus., Fish., vol. VIII, p. 389; v. Ben., Poiss. Belg., 
a Subgenus Lamna. 
h ,, Oxyrhina. 
c Caratt. Ale. Nuov. Gen., Spec., p. 11. 
d Regn. Anim., ed. 1, tom. II, p. 126. 
e According to Malm this length, “measured along the surface” (not, as here, in a straight line), may amount to -/- of that 
of the head. 
