MUGILIDiE.—SPflYR^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 Coll. 
P. 4531. More imperfect specimen, slightly larger. 
EnnisJcillen Coll. 
Mugil radobojanus, Kramberger. 
1882. Mugil radobcjanus, D. G. Kramberger, Beitr, Palaont. Oesterr.- 
Ungarns, yoI. ii. p. 114, pi. xxviii. figs. 2-4. 
Type. 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. 
Fins as in M. princeps [but relative proportions of foremost dorsal 
fin-spine uncertain]. 
Form. Log. Upper Miocene (Sarmatiau) : Eadoboj and Vrabce, 
Croatia. 
Kot represented in the Collection. 
The following otolith is also supposed to be referable to a member 
of this family :— 
Otolitlius {Mugilidarum) dehilis^ E. Koken, Zeitschr. deutsch. geoL 
Ges. vol. xl. (1888), p. 288, pi. xvii. fig. 8.—Lower Tertiary ; 
Jackson Eiver, Mississippi. 
Family SPHYRiENIDiE. 
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 
in sockets; opercular apparatus complete, with few branchiostegal 
rays, and the gill-opening wide. Lower pharyngeal bones separate. 
Vertebrae few, about 24 in number; centra of the 5 anterior 
abdominal vertebrae without transverse processes. Pelvic fins with 
one 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) 
now survives in nearly all the seas of the temperate and tropical 
regions. 
