MUGILIDiE. SPfl YR^NID^:. 
365 
P. 1974, -a. Two similar specimens displaying the pores in the scales 
for the slime-canal-system, and the second also showing 
the serrated antorbital cheek-plate. Egerton Cull. 
P- 4531. More imperfect specimen, slightly larger. 
Enniskillen Coll. 
Mugil radobojanus, Kramberger. 
1882. Mugil radobojanus, I). G. Kramberger, Beitr. Palaont. Oesterr.- 
Ungarns, vol. ii. p. 114, pi. xxviii. figs. 2-4. 
Tgpe. Imperfect fish ; Imperial Geological Survey, Vienna. 
A species attaining a length of about 0 25. Length of head with 
opercular apparatus contained about four times, and the maximum 
depth of the trunk about six times in the total length of the fish. 
I 1 >ns as in M. princeps [but relative proportions of foremost dorsal 
fin-spine uncertain]. 
form. <$- Poc. Upper Miocene (Sarmatiau) ; Radoboj and Vrabce, 
Croatia. 
Not represented in the Collection. 
1 he following otolith is also supposed to be referable to a member 
°f this family : 
Otoliihus ( Mugilidarum ) debilis, E. Koken, Zeitschr. deutsch. geol. 
Ges.vol.xl.(1888), p.288, pi. xvii. fig.8. — Lower Tertiary ; 
Jackson River, Mississippi. 
Family SPHY1LENID/E. 
Trunk more or less elongate and subcylindrical. Premaxilla 
excluding maxilla from border of upper jaw ; mandible prominent, 
cleft of mouth wide, and dentition powerful, the larger teeth fixed 
ln soc kets ; opercular apparatus complete, with few branchiostegal 
and the gill-opening wide. Lower pharyngeal bones separate. 
Vertebrae few, about 24 in number; centra of the 5 anterior 
abdominal vertebras without transverse processes. Pelvic fins with 
0Ue spine and five divided rays ; two dorsal fins, remote from each 
other, the anterior being spinous ; anal fin opposed to the posterior 
dorsal. Scales in regular series, small or of moderate size. 
These are carnivorous fishes, of which one genus ( Sphyrcena ) 
n °w survives in nearly all the seas of the temperate and tropical 
regions. 
