560 Fishes from the Quanza and Bengo Rivers. 



Serranidse. 



45. Lutjanus eut actus, Blkr. 

 Quanza River at Cunga. 



Pristipomatidae. 



46. Pristipoma jubelini, C. & V. 



Quanza River at Cunga, and Bengo River at Qui- 

 fungondo. 



Native name : Matotna. 



Cichlidae. 



47. Hemichromis fasciatus, Peters. 

 Quanza River at Cunga. 



48. Tilapia flavornarginata, Blgr. 



Quanza and Bengo Rivers, Lake Panguila. 

 Native name : Cacusso. 



49. Tilapia cobra, Blgr. 



Quanza River at Cunga and Cabambe, Lake Rumango. 

 Native name : Shopa. 



50. Tilapia melanopleura, A. Dum. 

 Quanza River at Cunga. 



51. Tilapia acuticeps, Stdr. 



Lucalla River at Lucalla. 



Adult males are pale purplish brown, the chin and throat 

 dull blue, the other fins yellow, dorsal, anal, and caudal with 

 blight rose round spots and edged with light rose. 



Gobiidae. 



52. Nematogobius ansorgii, g. & sp. n. 



Depth of body 5 to 6 times in total length, length of 

 head 3^ to 3^ times. Head 1| times as long as broad, 

 broader than deep ; snout short, rounded ; jaws equal in 

 front or lower slightly projecting; eye 4 times in length of 



