CTPRINODOXTID^. 
293 
P. 3851. Two small specimens. EnnisJcillen ColL 
1908. Small distorted specimen, probably of this species. 
Purchased. 
Prolebias goreti, Sauvage. 
1880. Prolebias goreti, H. E. Sauvage, Bull. Soc. Geol. France, [3] 
Tol. viii. p. 445, pi. xii. figs. 1, 2. 
Type. Imperfect fish. 
A species with moderately robust skeleton about 0'04.5 in length. 
Length of head with opercular apparatus about equal to the 
maximum depth of the trunk, and contained nearly four times in 
the total length to the base of the caudal fin, Yertebrse 12 in the 
abdominal, 16 in the caudal region. Dorsal fin with 10 rays, 
arising immediately in front of the anal, which comprises 14 rays. 
Form. <^' Log. Lower Miocene : Cereste, Basses Alpes. 
P. 378. Imperfect fish, in counterpart; Cereste. Gardner CoU. 
Prolebias brongniarti (Agassiz). 
1834. Aspius brongniarti, 1 j. Agassiz, Neues Jahrb. p. 383. 
1835-39. Aspius brongniarti, L. Agassiz, Poiss. Foss. vol. v. pt. ii. 
p. 38, pi. Iv. fig. 4. 
1874. Prolebias oustaleti, H. E. Sauvage, Bull. Soc. Hist. Nat. 
Toulouse, vol. viii. p. 193, pi. i. figs. 6, 7. [Imperfect fish.] 
1874. Aspius brongniarti, H. E. Sauvage, ibid. p. 195. 
Type. Imperfect fish; olim A. Brongniart Collection. 
A large species, attaining a length of about 0'13. Length of 
head with opercular apparatus equal to the maximum depth of the 
trunk, which is contained four times in the length to the base of 
the caudal fin. Yertebrm about 20 in the abdominal, 20 in the 
caudal region ; 17 pairs of ribs. Dorsal fin with about 12 rays, 
arising immediately in advance of the origin of the anal, which is 
more extended with 14 or 15 rays ; caudal fin slightly forked. 
The synonymy here given assumes that the discrepancies between 
the two original definitions are due to imperfections in the speci¬ 
mens studied. The amended definition now proposed is based on 
the specimens enumerated below. 
Form. ^ Log. Lower Miocene (Lignite): Puy-de-D6me, France. 
P. 3863. Impression of large fish about 0’13 in length, with traces 
of the dentition ; Menat. Emniskillen Coll. 
