PERCID^. 
olo 
Properca augusta (Agassiz). 
1834. Perea elongata, L. Agassiz, Neues Jahrb. p. 383. 
1836. Perea angusta^ L. Agassiz, Poiss. Foss. vol. iv. p. 79, pi. xi. 
1874. Perea angusta, H. E. Sauvage, Bull. Soc. Hist. Nat. Toulouse, 
vol. yiii. p. 183. 
1880. Properca angusta, H. E. Sauvage, Bull. Soc. Geol. France [3] 
vol. 'v’iii. p. 452. 
Type. Imperfect fish ; olini Brongniart Collection. 
The type- species, attaining a length of about 0*2. Length of 
head with opercular apparatus much exceeding the maximum depth 
of the trunk, which is contained nearly four times in the total length 
to the base of the caudal fin. Dorsal spines gradually increasing in 
length to the fourth, thence diminishing; but the length, of the 
longest spine considerably less than the depth of the trunk at its 
insertion and less than the length of the longest divided rav of the 
posterior dorsal fin. Anal spines very stout; the second not much 
larger than the third, but all considerably shorter than the succeeding 
divided rays. 
Fol'm. Loc. Lower Miocene (Lignite): Puy-de-D6me, France k 
27736. Fine specimen OH75 in length, and five fragments Menat. 
Croizet CoU. 
P. 1920, P. 3913. Portions of two larger specimens ; Menat. 
Egerton Enniskillen Colls 
27736 a. Six immature specimens; Menat. Croizet Coll. 
P. 1918. Immature specimen ; Menat. Egerton Coll. 
Properca beaumonti (Agassiz). 
1834. Perea beaumonti, L. Agassiz, Neues Jahrb. p. 383. 
1836. Perea heaumontii, L. Agassiz, Poiss. Foss. vol. iv. p. 81, pl. xi a. 
1873. Perea {Pereiehtkys) beaumonti, H. E. Sauvage, Bull. Soc. Geol. 
France [3] vol. i. p. 388. 
1880. Properea beaumontii, H. E. Sauvage, Bull, Soc. Geok France [3] 
vol. viii. p. 452. 
Type. Imperfect fish; School of Mines, Paris. 
A comparatively robust species, attaining a length of about 0'2. 
Length of head with opercular apparatus not exceeding the maximum 
depth of the trunk, which is contained about three times in the total 
length to the base of the caudal fin. 
1 This species is also recorded from the Fpper Miocene of Badoboj, Croatia, 
by F. Bassani, Atti Soc. Yeneto-Trent. Sci. Nat. vol. vii. (1880), p. 88. 
2l 2 
