SCOMBKIDiE. 
477 
separated, the anterior with more than 20 spines, arising above the 
paired fins ; posterior dorsal and anal fins of equal extent, and 
followed by about 20 finlets ; caudal fin deeply forked. [Scales 
unknown.] 
An extinct Oligocene genus. 
Thyrsitocephalus alpinus^ G. vom Rath. 
1859. Thyrsitocephalus alpinus^ G. vom Rath, loc. cit. p. 114, pi. iii. 
fig- 4. 
1886. Thyrsitocephalus alpmus, A. Wettstein, Fischfaima Tertiaer. 
Glarnerschief. (Denkschr. schweiz. Palaeont. Ges. vol. xiii.), p, 70. 
Type. Nearly complete fish; Geological Museum, University of 
Bonn. 
The type species, attaining a length of about O'16. Length of 
head with opercular apparatus somewhat exceeding maximum depth 
of trunk, and contained five times in total length of fish. Teeth 
recurved, about 12 in each jaw. Anterior dorsal fin with 22 or 23 
spines, posterior dorsal with 10 articulated rays, anal fin wdth 10 
or 12 articulated rays. 
Form. ^ Loc. Oligocene : Canton Glarus, Switzerland. 
Not represented in the Collection. 
' / :>7C J 
Genus LEPIDOPUS^ Gouan. 
[Hist. Nat. Poiss. 1770, p. 185.] 
Syn. Anenchelum^ H. D. de Blainville, Nouv. Diet. d’Hist. Nat. 
vol. xxvii. 1818, p. 314. 
Lepidopides, J. J. Heckel, Denkschr. k. Akad. Wiss., math.- 
naturw. Cl. vol. i. pt. i. 1850, p. 239. 
Trunk laterally compressed and excessively elongated. Orbit 
large; mouth large and mandible prominent: marginal dentition 
powerful, a few teeth much enlarged, recurved, and barbed. From 
90 to 110 vertebrae, none with transverse processes. Pectoral fins 
well developed, but pelvic fins rudimentary ; dorsal fin continuous 
and nearly uniform in elevation along the whole length of the back; 
numerous rudimentary anal fin-spines; no finlets; caudal fin 
deeply forked. Scales absent. 
Pelagic and deep-sea fishes of wide range. 
Lepidopus glarisianus (Rlainville). 
1708. Figure hj J. J. Scheuchzer, Pise. Querelae et Vindiciae, pi. ii. 
1818. Anenchelum glarisianum^ H. D. de Blainville, Nouv. Diet. 
d’Hist. Nat. vol. xxvii. p. 314. 
1834. Anenchelum ylarisianmn, L. Agassiz, Neues Jahrb. p. 302. 
