BY CHARLES W. DE VIS, M.A. 451 



Brownish yellow. A narrowly dark-edged broadly elliptical 

 (slug-shaped) pearly band from the base of the anterior dorsal to 

 the chest. A large ovate black-brown blotch covers the hinder 

 half of the trunk from the distal third of the pectoral to the 

 caudal peduncle, but does not reach the anal. Vertical fins yellow. 

 Ventrals and anal spines black. 



Length, 3 j. Loc. South Seas. Collector, Mr. Cheeke. 



POMACENTRUS ONYX. 



D. 12/11. A. 2/12. L. Lat. 26. L. Tr. 2/9. 



Height I of the length, s.c. ; head 3 barely. 



Pre-orbital finely serrated, and ^ of orbit, pre-opercle finely 

 serrated on posterior, more strongly on lower limb. Profile very 

 convex above, less so beneath. 



Four black bands, first over the eye to the chin and chest. 

 Second from anterior half of spinous dorsal to ventral. Third 

 from posterior half of soft dorsal to anal. Fourth forming a 

 large ovate patch covering the end of the caudal. Ventrals black. 



Loc. South Seas. Collector, Captain Browne. 



POMACENTRUS NOTATUS. 



D. 13/12. A. 2/13. L. Lat. 25. L. Tr. 2/7. 



Lobes of caudal prolonged, of dorsal and anal moderately so. 

 Operculum with a spine. 



Brownish grey with a blue tinge. Pectoral and tip of soft 

 dorsal yellow. Tip of anal and caudal lobes white. Scales of 

 head and belly with short longitudinal bars of blue ; of back and 

 flanks with vertical streaks, many of which are curved, and have 

 a process directed backwards from their middle. 



Length, 3 inches. Loc. New Britain. 



POMACENTRUS NIOMATUS. 



D. 13/13. A. 2/13. L. Lat. 26. 

 Height 2 J, head 3^ in the length. Operculum entire, pre-orbital 

 narrow, almost entire pre-operculum strongly serrated. 

 a6 



