TERTIARY FRESH WATER FISHES FROM SOUTHERN QUEENSLAND. 169 
Material . — Fragmentary remains very much crushed. The bone is 
preserved in a friable condition in black carbonaceous shale. 
Description . — All that can be made out is that the remains are those of 
a Percoid fish, the spinous dorsal, pre-operculum with spinous border, and 
scales with concentric and radial ornament suggesting that, in view of the 
probable freshwater nature of the deposit, the remains may be those of 
Percolates. 
Order Percomorphi. 
Family MOBONIDdE. 
Genus Indet. 
(Plate XXV; Text-figure 14.) 
Locality. — Well, Portion 122, Parish of Bundamba. 
Material . — Posterior half of a very small fish, the bones replaced by 
translucent material ( (?) chalcedony) and preserved in fine shale. 
Description . — The estimated length of the fish is about 5 centimetres. 
Text-figure 14. — Percoid fish, genus indet., from well, Portion 122, Parish of Bundamba. 
X 4. Detail of caudal fin. — d. cr , dorsal caudal radials ; hy , hypural ; Z. v., last 
vertebra ; n. a., fused neural arches covering the posterior end of the spinal cord ; 
u, urostyle. 
The dorsal fin has 12 soft rays, the last two very small. The anal has three 
spines, one small anteriorly and two more, subequal and much stronger. The 
caudal has about 17 jointed rays and a series of dorsal and ventral filler ul 
