TUNNINA. 
93 
the true Mackerels. The height of the anal fin in both 
species seems to vary between 60 % and 70 % of the length 
of the ventral fins, while in the true Tunnies, as well 
as in Pelamis, it is generally greater than or at least 
(in youth) equal to the length of these fins. 
Like the other members of the genus, the Euthynni 
are pelagic fishes, belonging to the tropic and tempe- 
rate seas, and only appear as occasional visitors within 
the limits of the Scandinavian fauna. 
THE TUNNINA. 
EUTII YNNUS ALLITTERATUS. 
Fig. 26. 
Distance between the first dorsal fin and the tip of the snout less than 28 % of the length of the body. Height 
of the posterior dorsal fin about 1 / i of the length of the head. The hind portion of the bach steel-blue marked 
with wavy black bands and spots , which melt into varying figures. The belly silvery , either plain or marked with 
black spots. 
Fig. 26. Euthynnus allitteratus. After Nilsson. 
R. br. 7; I). 15 1. 16/ 1 — / VIII 1. IX; A. ——I VI— 
' 10 — 12 ' ’ 10 — 12 
VIII; P. 26 I. 27; V. 1 / 3 ; C. x+18+x. 
Syn. Scomber allitteratus , Rafin., Car. JVuov. Gen., p. 46; Jokd., 
Gilb., ( Euthynnus ) Syn. Fish. N. Amer., Bull. U. S. Nat. 
Mus., No. 16, p. 430. 
Scomber Commersonii, Risso, Ichth. de Nice , p. 163. 
Scomber quadripunctatus, Geoffr., Descr. de VEgypte , Poiss., 
tab. 24, fig. 5. 
Scomber leachianus, Risso, Eur. Mer., vol. Ill, p. 416. 
Scomber thunina, Cuv., Regn. Anim., ed. 2, vol. II, p. 198; 
Cuv., Val., ( Thynnus thunnina ) Hist. Nat. Poiss., vol. VIII, 
p. 104, tab. 221; Id. ( Scomber ) Regn. Anim. Illustr., 
Poiss., p. 118, tab. 46, fig. 1; Schleg. ( Tliynnus ) Fn. 
Japon., 4, Pisces, p. 95, tab. 48; Gthr, Ca.t. Brit. Mus., 
Fish., vol. II, p. 364; Nilss., Ofvers. Vet.-Akad. Forh. 1863, 
p. 499, tab. 5; Malm, Gbgs, Boh. Fn., p. 416; Ltkn, 
Vid. Meddel. Naturb. For. Kbhvn. 1879 — 80, Heft. 3, 
Ofvers. Vid. Mod., p. II; Winth., Naturh. Tidskr. Kbhvn., 
ser. Ill, vol. XII, p. 14; Id. Zool. Dan., Fiske, p. 24; 
Moe., Hist. Nat. Poiss. Fr., vol. II, p. 421 ; Coll., Forli. 
Vid. Selsk. Christ. 1882, No. 19, p. 1; Lillj. ( Orcynopsis ) 
Sv., Norg. Fiskar, vol. I. p. 270; Coll. ( Euthynnus ) N. 
Mag. Naturv., Bd. 29 (1884), p. 58. 
Thynnus brevipinnis, Cuv., Val., 1. c. p. 112 (Cf. Lutken, 
Spol. Atl., 1. c., p. 467). 
Thynnus brasiliensis, Cuv., Val., 1. c., p. 110 (Cf. Gthr, 
Cat. 1. c.). 
Thynnus affinis, Cantor (Cf. Day, Fish. Ind., p. 252; Ltkn, 
Sp. Atl, 1. c., p. 467). 
Cuvier states that the distinction between the 
Tunnina and the Tunny was known to Aristotle; and 
he also refers to this species Aldrovand’s Pelamis 
coerulea. Before Cuvier’s time Rafinesque and Risso 
