NOTES ON THE COCCIDAE OF BRITISH GUIANA. 109 



Akermes quinquepori, Newst. A rare species. From beneath the bark of certain 

 trees. On this occasion taken from Macrolobium acaciaefolium in the Botanic 

 Gardens, Georgetown. Never more than one or two are found together in one 

 position. The species is invariably attended by a small black species of Cremasto- 

 gaster ant. When alive it is of a dull pinkish colour closely adhering to the bark. 



Coccus impar, Ckll. An uncommon species. Name of host-plant unknown. 



Saissetia begoniae, Douglas. Recorded from British Guiana in 1892 on Begonia 

 sp. It has not been met with since then. 



Saissetia hemisphaerica, Targ. An exceedingly common species. Its commonest 

 host-plants are Liberian coffee, citrus plants, guava, and several species of ferns. 

 Occasionally found on crotons. 



Saissetia nigra, Nietn. The commonest species of Saissetia in British Guiana. 

 Recorded since 1891. Host- plants : Hevea brasiliensis, Sapium jenmani, Okra 

 (Hibiscus esculentus), Solanum melongena, and many others. 



Saissetia oleae, Bern. A common species on citrus plants, crotons, Duranta, etc. 



Saissetia hurae, Newst. A rare species. A thick infestation was however dis- 

 covered on one occasion on the twigs of a sand-box tree (Hura crepitans), attended 

 by a species of Cremastogaster ant. 



Saissetia scutata, Newst. A rare species. A large colony was discovered in one 

 instance on a cannon-ball tree (Couroupita guianensis). The infestation covered 

 the curling branches which bear the flowers and fruit near the ground. A species 

 of Cremastogaster ant was in attendance. 



