344 
ACTINOPTERl’GII. 
1839-44. Enchehjnpus tigrinus , L. Agassiz, Poiss. Foss. vol. v. pt. ’• 
p. 10, pt. ii. p. 137, pi. xlix. 
1864. Paranguillu, P. Bleeker, Atlas Ichthyol. vol. iv. p. 8. . 
1876. Enchelyopus tigrinus, F. Bassani, Atti Soc. Veneto-Trent. ° c1, 
Nat. vol. iii. p, 189. 
Type. Nearly complete fish ; Paris Museum of Natural History. 
flio type species, attaining a length of about 0'35. Length o 
head with opercular apparatus contained between nine and ten 
times in the total length to the base of the caudal fin ; anal bn 
two thirds as long as the dorsal. Skin both of trunk and median 
fins mottled with large pigment spots. 
Form. 4' Loc. Upper Eoccno : Monte Bolca, N. Italy. 
J'lot represented in the Collection. 
Genus ANGUILLA, Shaw. 
[General Zoology, vol. iv. 1803, p. 15.] 
Extremity of rostrum slightly expanded laterally for articulation 
with maxilla; ; teeth small and arranged in longitudinal bands or 
series. Opercular apparatus well-developed, and the long, slen er 
branchiostegal rays curving round it. Pectoral fins present ; dorsa 
fin arising far bohind the occiput, extending round the tail an 
continuous with the anal fin. Rudimentary scales embedde 11 
skin. 
Existing species both in the freshwaters and on the coasts o 
temperate and tropical regions. 
Anguilla leptoptera, Agassiz MS. 
1796. Murrrna conger, G. S. Volta, Ittiolit. Veronese, p. cvi. pf x% 
fig. 3 {err ore). e 
1835. Anguilla leptoptera, L. Agassiz, Neues Jahrb. p. 29- ( nl 
only). 
Type. Nearly complete fish ; Paris Museum of Natural History^ 
A slender species attaining a length of about 0'3. 
head with opercular apparatus contained between nine an 
times in the total length to the base of the caudal fin ; ana 
somewhat more than ono and a half times as long as the P or ^ 
of trunk in front of it ; dorsal fin arising about midway betwe 
the pectorals and the anal fin. About 130 vertebra;. 
Form. Loc. Upper Eocene : N. Italy. 
P. 1890, P. 3876. Well-preserved specimen, in counterpart, ^ beo^ 
and broken at the middle of the abdominal region , 
