CTPKIXODOXTID^. 
295 
completely in advance of the anal fin, which is not modified ; caudal 
fii\ truncated. 
Pachylebias crassicaudus (Agassiz). 
1832. Lehias crassicaudns, L. Agassiz, Xeiies Jahrh. p. 136 (name 
only). 
1839. Lebias crassicaudus, L. Agassiz, Poiss. Foss. vol. v. pt. ii. p. 56, 
pi. xli. figs. 11, 12. 
1849. Lebias crassicaudus, E. Sismonda, 3Iem. P. Accad. Sci. Torino, 
[2] vol. X. p. 13, pi. ii. fig. 59. 
1874. Lehias crassicaudus, G. Capellini, 51em. Accad. Sci. Istit. 
Bologna, [3] vol. iv. p. 556. 
1874. Prolebias crassicaudus, H. E. Sauvage, Bull. Soc. Hist. Xat. 
Toulouse, vol. viii. p. 190. 
1891. Lebias crassicaudus, C. Pollini, Atti Soc. Ligust. Sci. Xat. vol. ii. 
p. 122. 
T'ype, Imperfect fish. 
The type species, attaining a length of about 0*08, but usually 
smaller. Length of head with opercular apparatus slightly ex¬ 
ceeding the maximum depth of the trunk and contained about three 
and a half times in the length to the base of the caudal fin. 
Yertebrm about 30 in number, half being caudal. Dorsal and anal 
fins with about 9 or 10 rays; the dorsal arising midway between 
the occiput and the caudal fin ; the anal arising opposite the hinder 
end of the dorsal. 
Form. Loc. Fpper Miocene: Italy, Sicily, and Crete. 
32491-92, 38147. Three imperfect distorted specimens : Sinigaglia, 
Ancona, Italy. Purchased, 1857, 1864. 
P. 1833, P- 3850. Four similar specimens ; Sinigaglia. 
Egertoii 4' EnnisJcillen Colls. 
P. 4. Seven specimens, one showing some teeth ; Eacalmuto, Sicily. 
Purchased, 1879. 
P. 1833 a. Slab with fragmentary remains ; Racalmuto (?). 
Egerton Coll. 
P 1834. Fine specimen and three others; Crete. Egerton Coll. 
P. 4505. Imperfect fish displaying caudal vertebrae : Crete. 
EnnisJcillen Coll. 
24555-56. Xine specimens, several exhibiting immature fishes with 
skeleton not yet much thickened ; Crete. 
Purchased 1849, 1858. 
