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Abstract for On the cichlid fishes of the genus Pelmatochromis with proposal of a new genus for P. congicus; on the relationship between Pelmatochromis and Tilapia and the recognition of Sarotherodon as a distinct genus:
Pelmatochromis nigrofasciatus Pellegrin is not, as has been suggested, a synonym of P. ocellifer Boulenger. The two species are defined and their relationships are discussed. The name Pelmatochromis exsul Trewavas was based on a misidentification of young Hemichromis bimaculatus Gill. Recognition of this fact removes the only record of Pelmatochromis from East Africa. A new genus is proposed for P. congicus Boulenger and a key to the species of Pelmatochromis is given. Reasons are given for excluding Pelmatochromis from Tilapia and retaining T. husumana in Tilapia. Sarotherodon Rüppell is considered to require full generic rank and Tilapia and Sarotherodon are defined.
Abstract for A new species of cichlid fishes of rivers Quanza and Bengo, Angola, with a list of the known cichlidae of these rivers and a note on Pseudocrenilabrus natalensis Fowler
A species of the tilapiine genus Sarotherodon, formerly confused with other species, is described. An annotated list of the cichlid species of Rivers Bengo and Quanza is added, from which it appears that the cichlid fauna of the Bengo and Lower Quanza is related to that of the Chiloango and Ogowe, but that of the Upper Quanza to the Zambezi basin and R. Cunene, southern Angola.
The holotype of Pseudocrenilabrus natalensis is a specimen of Chromis philander Weber. Reasons are given for agreeing with Wickler that it is related to Chromis multicolor Hilgendorf and that both are generically distinct from Haplochromis. Pseudocrenilabrus is their earliest valid generic name.
