It will probably be of interest to workers on Coccids in other parts of the world to know which species have been introduced into South Africa and to what extent they have become established. Moreover, since so many of these are constantly found during the inspection of our nurseries, etc., it seems desirable to place on record their known distribution (August, 1917) for future reference. Fifty-five are included in this list, which is considered to be approximately complete. Others, such as Lecanium bituberculatum, Targ., L. corni, Bouché, Pulvinaria betulae (L), Sign., Diaspis rosae (Bouché), Aspidiotus piri, Licht., and A. ostreaeformis, Curt., have been stopped at the ports of entry, but since these species are not established in the country they are not included.