SCOMBKID^. 
455 
Thynnus thynnus (Linnaeus). 
1758. Scomber thynnus^ Linnaeus, Syst. Nat. ed. 10, p. 297. 
1831. Thynnus vulgaris, Cuvier & Valenciennes, Hist. Nat. Poiss. 
Yol. viii. p. 58, pi. ccx. 
1860. Thynnus thynnus, A. Giinther, Catal. Fishes B. M. vol. ii. 
p. 362. 
1890-91. Thynnus thynnus, E. T. Newton, Geol. Mag. [3] vol. vii. 
p. 264, & Vert. Pliocene Deposits] Britain (Mem. Geol. Surv.), 
p. 91, pi. ix. fig. 8. 
Type. Decent fish. 
The type species, attaining a length of 3 to 4 metres. Length of 
head with opercular apparatus slightly exceeding maximum depth 
of trunk, which is contained about four times in total length of fish. 
Vertebrae 16 in abdominal, 23 in caudal region. Pectoral fins, 
when adpressed, nearly reaching end of anterior dorsal, which 
comprises 14 spines ; posterior dorsal with 1 spine, 13 articulated 
rays, and 9 finlets; anal fin with 2 spines, 12 articulated rays, and 
8 finlets. 
Form. ^ Log. Pleistocene (Forest Bed Series) : Norfolk. 
P. 8737. Abdominal vertebra described and figured by E. T. Newton, 
loo. Git. ; Forest Bed, East Dunton. Savin Coll. 
36168-69. T wo larger vertebral centra; Hasbro\ Layton Coll. 
Thynnus scaldisi. Storms. 
1890. Thynnus ( Orcynus) scaldisii, B. Storms, Bull. Soc. Beige Geol. 
vol. iii. Mem. p. 175, pi. vii. figs. 17-23. 
1890. Thynnus scaldisiensis, A. S. Woodward, Ann. Mag. Nat. Hist. 
[6] vol. V. p. 294. 
1891. Thynnus scaldiensis, E. T. Newton, Vert. Pliocene Deposits 
Britain (Mem. Geol. Surv.), p. 90. 
Type. Vertebrae ; Brussels Museum. 
Somewhat smaller than the type species, known only by vertebrae. 
The centra behind the 30th are longer in proportion to their width 
than in the latter species. 
Form. ^ Log. Lower Pliocene : Antwerp ; Suffolk. 
P. 9453. Caudal vertebra, ‘described by A. S. Woodward, Iog. gu. ; 
Coralline Crag, Aldborough, Suffolk. 
Presented by Searles V. Wood, Esq. 
P. 5583. Smaller caudal vertebra, described ibid.; Coralline Crag, 
Suffolk. Harford Coll. 
