1896.] . FROM THE UPPER SHIRE RIVER. 917 
Oreochromis shiranus. 
Docimovvs, g. n. 
Allied to Chromis, but both jaws with a very broad band of 
teeth with compressed sharp-edged crowns; the outer teeth large, 
with nail-shaped entire crowns or with a very small lateral cusp, 
the others small and tricuspid. 
Docrtmopvs JOHNSTONI, sp.n. (Fig. 3, p. 918.) 
4 or 5 rows of teeth in each jaw; 10 or 11 teeth on each side 
of the outer series of the upper jaw; crowns brown-edged. Depth 
of body 22 to 3 times in total length, length of head 3 times. 
Hye a little nearer the gill-opening than the tip of the snout, its 
diameter 43 times in length of head, 13 times in interorbital 
width, and equal to preorbital; maxillary not extending to below 
