90 
8EIACHII. 
Genus ONCOBATIS, Leidy. 
[Proc. Acad. Nat. Sci. Philad. 1870, p. 70.] 
Dermal tubercles of pentagonal outline, with the under surface 
convex and smooth ; upper surface presenting five sloping planes, 
more or less well defined by prominent borders, the raised central 
portion covered with gano-dentine. [? Buja.'] 
Oncobatis penta^onvs, J. Leidy, loc. eit,, and Extinct Vert. Fauna 
West. Territ. (Hep. D. 8. Geol. Surv. Territ. vol. i. pt. i- 
1873), p. 204, pi. xvii. figs. 18, 19. — Pliocene ; Sinker 
Creek, Idaho. 
Family TORPEDINID^. 
Disk broad, smooth ; skeleton of pectoral fins not continued for- 
wards beyond the base of the snout. Median fins well developed, 
n electric organ between the pectoral fins and the head. 
Genus TORPEDO, Dumeril. 
[Zool. Analyt. 1806, p. 102.] 
Syn. Narcobatis, de BlainvUle, Faune Francaise— Poissons, 1820-30, 
p. 43. 
Tail nioderatcly developed, with two dorsal fins; pelvic fins sepa- 
rate ; spiracles at a short distance behind the eyes. 
Torpedo egertoni, A. do Zigno, Mem. R. Istit. Veneto, vol. xx. 
(1878), p. 452, pi. xvii. — Middle Eocene; Monte Bolca, 
near Verona. 
Torpedo gigantea, L. Agassiz, Neues Jahrb. 1835, p. 297, and 
Poiss.Foss. vol. iii. p. 382**: Baja torpedo (Linn.), Volta, 
Ittiolit. Veron. 1796, p. 261, pi. 61 : Narhohatus gigan- 
teus, de BlainvUle, Nouv. Diet. d’Hist. Nat. vol. xxvii. 
1818, p. 33/ . — Middle Eocene ; Monte Bolca. 
Torpedo, sp., C. Hasso, Natiirl. 8yst. Elasm., Besond. Theil, p. 176, 
pi. xxiii. figs. 15-18. 
Detached vertebrse, supposed to belong to Astrape, have been re- 
corded from the amber-bearing beds of Samland, East Prussia 
(F. Noetling, Abh. geol. Specialk. Preussen u. Thiiring. Staaten, 
vol. vi. pt. 3, Lief. i. p. 36, pi. viii. figs. 6-9). They are named 
Astrape (?) media, and were originally referred to Torpedo by 
C. Masse, Paheontogr. vol. xxxi. (1884), p. 5, pi. i. figs. 6, 7. 
Vertebrae of Barcine are also recorded by Hasse from the Tufeau 
do Ciply (Natiirl. Syst. p. 178, pi. xxiii. figs. 22, 23) and the Brux- 
ellian of Woluwe St. Lambert {op. eit. p. 178, pi. xxiii. figs. 24, 25). 
