a1 Scott Agricultural Laboratories, Nairobi.
The true identity of the specimens from Africa recorded as Coccus africanus (Newst.) and C. viridis (Green) is reviewed in detail. Four other species of green scales attacking coffee in Africa south of the Sahara are described as new. These are: C. alpinus—for more than 40 years confused with africanus—C. celatus, C. consimilis and C. viridulus.