If you didn't I can send the pdf file (give me your email by PM)
Where does this drawing from Ribbink et al (1983) fit into this new arrangement?
zebroides, without any doubt.
To resume the different problems :
1/ Hemichromis afer (type locality unknown, except Lake Malawi) seems to have many différences with the fishes we know now as Cynotilapia afra (see the drawning above, there are also pictures of syntypes in Tawil's paper). The melanic pattern, without vertical bars, the teeth are different.
2/ What we know as C. afra has been also described as Microchromis zebroides (Type locality : Likoma)
3/ So as we don't know really what is afra the name available is zebroides
4/ H. afer is the type species of Cynotilapîa but... what is H afer ???? see 1/ !
5/ So difficult to give the genus name Cynotilapia without knowing its type species.
6/ That's why Patrick uses the next valid name Microchromis
6/ To give again the name afra to cichlids we know as afra, the 1rst thing is to find the true afra !
Difficult without knowing the type locality.
Anyway, there is a problem : Patrick explains that the teeth of the true afra (syntypes) are very large, caniniforme and there are only 3 or 4 of these large teeth (M. zebroides having many small teeth).
This remind me and old picture I 've made of "Cynotilapia sp galyreya" which seems to have identical teeth to H. afer.
So the problem remains about the use of Cynotilapia as genus name, and Patrick doesn't say anything else (for many years now)
Patrick is very busy but I hope i'll explain the problem here better than me.