CONTRIBUTION TO THE KNOWLEDGE OF MEALY BUGS, GENUS PSEUDOCOCCUS, IN THE VICINITY OF CAPE TOWN, SOUTH AFRICA. By Chas. K. Brain, F. E. S. The material studied was mainly collected by the writer during 1910 and the first part of 1911. Two of the species, how-ever, were collected by Mr. Chas. P. Lounsbury, as mentioned in the descriptions. Sixteen different host plants are involved, but Pseiidococcus capensis was found on eleven of these, while particular attention was not paid to hosts for P. longispinus, which was found exclusively in greenhouses. It should be mentioned that the specimens were collected as noticed while ■engaged on other entomological work connected with the Department of Agriculture, and it is by no means implied that the seven species mentioned in this paper include all that are present in the Cape Peninsula. To insure more accurate measurement of the segments of the antennae, and the setae of the anal lobes and anal ring, all specimens were stained by the Carbol Fuchsin method described in a separate section of this article. The photographs and draw-ings were prepared by the writer hoping that they would facilitate the determination of the species. At this first opportunity I wish to express my gratitude to Mr. Chas. P. Lounsbury, Chief of the Division of Entomology for the Union of South Africa, foi" much assistance in Entomological work, and also to Prof. Herbert Osborn, of Ohio State University, for his timely criticism and advice. Pseudococcus longispinus Targ. 1867. Dactylopius longispinus Targioni. Studi suUe Cocciniglie 1867. Dactylopius adonidum Signoret. Essai sur les Cochenilles. Ann. Ent. Soc. Fr. 1875. Dactylopius longifilis Comstock. Ann. Rep. Comm. Agric. 1880. Washington 1881. This well known insect (Fig. 1) can be readily recognized by its caudal appendages, but the following particulars are added to make the series uniform and to assist in the determination of slide material. Adult 9 . Largest specimen found measured while alive 4.1 mm., and had caudal appendages .5.5 mm. long. AntenncB: Measurements in ^i. 177
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