9 



182 CHAS. K. BRAIN AND ALBERT E. KELLY. 



7. Pseudococcus citri, Risso. 



Although common in most parts of the country the habit of this species is 

 somewhat puzzling. It is prevalent in the Cape Peninsula, but generally confined 

 to nurseries, where it would appear to be Dr. Marchal's variety, Ps. citri var. 

 coleorum, as it is chiefly bad on coleus. In the same locality it is very seldom found 

 on citrus, being replaced by Ps. fragilis, Brain ; the most common species in 

 vineyards and gardens is Ps. capensis, Brain. In Natal similar conditions obtain, 

 but the citrus species here is Ps. filamentosus, Ckll., while the most common species 

 in gardens in Durban is Ps. virgatus, Ckll. In Pretoria Ps. citri is occasionally 

 extremely abundant on oranges, but from the majority of the citrus orchards, such 

 as those of Rustenburg, etc., the species is apparently absent. The most common 

 species in gardens in Pretoria is Ps. burner ae, Brain. 



8. Pseudococcus filamentosus, Ckll. 



Bathurst, Richmond, Pietermaritzburg (citrus), Pretoria (grevillea). 



9. Pseudococcus nipae, Mask. 



Cape Town, Graafi: Reinet, Port Elizabeth, Uitenhage, Durban, Pietermaritzburg, 

 Johannesburg and Pretoria. Found only on palms in greenhouses, except at Durban, 

 where it is occasionally found out of doors. 



10. Pseudococcus sacchari, Ckll. 



Zululand, Natal Coast, and Tzaneen (Transvaal). 



11. Pseudococcus virgatus, Ckll. 



Durban, Pietermaritzburg and Pretoria (ex Durban). 



12. Tylococcus insolitus (Green). • 

 East London, Kingwilliamstown, and Pietermaritzburg. 



13. Eriococcus araucariae, Mask. 



Common in the Cape and Natal and occasionally found in Johannesburg and 



Pretoria. 



Subfamily Asterolecaniinae. 



14. Asterolecanium bambusae, Bdv. 

 Natal coast and midlands. 



15. Asterolecanium variolosum (Ratz.). 



Cape Peninsula, Elsenburg, Grabouw, Paarl, Simondium, Irene, Johannesburg. 

 Krugersdorp, Newclare and Canada Junction. 



16. Cerococcus ornatus, Green. 



Found on one occasion only on stems of Dovyalis caffra, Harv., and Calodendron 

 capense, Thunb., at Pietermaritzburg. 



Subfamily Coccinae. 



17. Coccus cacti, Goeze. 



Botanic Gardens, Cape Town, where it was introduced many years ago. 



18. Coccus confusus capensis, Green. 



May usually be found wherever Opuntia monacantha is abundant, e.g., in the. 

 Cape Peninsula, Albany and surrounding districts, Natal, and occasionally in the 

 Orange Free State. 



