326 
ACTINOPTERYGII. 
species from an Upper Tertiary deposit near Sofia, Bulgaria, are 
named Silwrus serdieensis by F. Toula, Denkschr. k. Akad. 
math.-naturw. Cl. vol. lv. (1889), pt. ii. p. 108, pi. ix. 
The following specifically undetermined specimens probablj be. 
to this genus : — 
16402 e, 16403 a. Anterior end of snout and an abraded 
skull, erroneously referred by Lydekker to young 1,1 
viduals of Bayarius yarrelli in Palseont. Indicu, 
vol. iii. (1886), p. 255 ; Lower Pliocene, Siwalik m 77 
India. 
Presented, by Col. Sir Proby T. Cautley, K.G.B . , L 
Genus PSEUDEUTROPIUS, Bleeker. 
[Noderl. Tijdschr. Dierk. vol. l. 1863, p. 106. ] 
Head almost or completely covered with soft skin; gape 
not extending backwards to the orbit, which is large; teeth nun^ 
and villiform, some on the vomer and palatines. Pectoral fin ^ 
robust spine, serrated on the posterior or both borders : pelvic ^ 
with six rays ; dorsal fin short-based, with a robust spine, 
less directly opposed to the pelvic pair ; a very small adipose 0 ■ 
fin ; anal fin much extended, terminating at some distance fro 
caudal, which is forked. Skin naked. 
Surviving species in the East Indies. 
Pseudeutropius verbeeki, Gunther. 
1876. Braehyspondylm indicus, W. von der March, Ial® a q^o- 
vol. xxiii. p. 412, pi. xxiv. fig. 2. [Imperfect fish ; Loya 
logical Museum, Dresden.] j jji. 
1876. Pseudeutropius verbeekii, A. Gunther, Geol. Mag. l J 
p. 435, pi. xv. fig. 2. 
Type. Imperfect fish ; British Museum. 
A species attaining a length of about 0-6. Length of heat 
opercular apparatus slightly less than half that of the turn ^ 
the pectoral arch to the base of the caudal fin. Cranium 
elongate, and upper surface of snout granular. Pectoral fan l^ e( j 
about as long and strong as the dorsal fin-spine, similar y ™ 
with fine longitudinal striations and strongly serrated on t ie 
border; pelvic fins with seven rays, inserted immediate y 
the dorsal, which exhibits seven rays behind the spine ; ana 
with twenty-eight rays ; caudal fin very' deeply 7 forked, 
each lobe about equal to that of the terminal nineteen ' cl ' 
Form df Loc. Freshwater Tertiary 7 Formation : Padang, * 
