

THE COCCIDAE OF SOUTH AFRICA. — III. 231 



Habitat : On aloe, Howick, Natal ; collected by C. Fuller. On aloe, Port 

 Elizabeth ; collected by C. P. Lounsbury, April 1901. On aloe, Eshowe, Zululand ; 

 collected by C. Puller, 17th July 1907. On aloe, Johannesburg, June 1910 (Cape 

 No. 1520). On aloe, Barberton, Tvl. ; collected by A. Kelly, Nov. 1914. On 

 aloe, Johannesburg ; collected by the writer, July 1915. 



Collection No. : 141. 



133. Chionaspis margaritae, sp. n. (Plate xv, fig. 148). 



Scale of adult $ about 2 "5 mm. long, moderately broad and convex, white, 

 very smooth and glossy or pearly in appearance, with brownish exuviae. The 

 second exuviae are sometimes only very slightly covered and can be seen quite 

 easily. In the other cases the scales and also the covering of the second exuviae 

 are much more robust. The whole scale has an extremely regular, smooth and neat 

 appearance. 



Adult $, when mounted, regular in outline, somewhat narrowed in front and with 

 the anterior part of the body slightly more chitinised than the remainder. Abdominal 

 segments not produced but broadly rounded, and conspicuous by the numerous 

 gland openings ; close to the marginal gland areas of the three anterior abdominal 

 segments, but a little nearer the median line, is a series of carrot-shaped glands, 

 which often appear in optical section as broad, conical spines. The pygidial 

 margin (fig. 148) is broadly rounded and slightly but straightly notched in the 

 middle. Lj small, with more or less straight sides and pointed ends ; L 2 consisting 

 of two lobules, of which the inner is the larger, both lobules + trilobed with outer 

 end rounded. Marginal glands large and conspicuous. Plates of moderate length, 

 simple, dagger-like. Circumgenital glands in 5 groups : — ■ 



7—8 

 18—23 18—23 

 34—40 34—40 



Remarks. This species is very much like Chionaspis capparisi (q.v.), but may 

 be readily distinguished by the sublateral gland area of the first three abdominal 

 segments and the more numerous circumgenital glands. 



Habitat: On aloe (Cape Accession No. 1269, of which the data have been lost). 



Collection No. : 179. 



134. Chionaspis humilis, sp. n. (Plate xv, fig. 150). 



The insects are clustered on the leaves of the host-plants and large numbers 

 of the narrow male puparia are found clustered together on the lower parts of the 

 leaves. The scale of the adult female is about 2 mm. long, white, comparatively 

 broad, usually robust and convex, but in some cases appearing rather loosely 

 constructed ; broadest just behind the middle, when it may terminate behind abruptly 

 or be somewhat extended and pointed. The exuviae vary considerably ; in some 

 the first pellicle is glassy and almost colourless, but in the majority of cases it is 

 slightly yellowish. The second exuviae are thinly covered with a layer of secretion, 

 through which they show yellowish to brown. In old material it is a common 

 occurrence for the anterior part of the second pellicle to appear greyish and the hind 

 margin to look almost naked and yellow. When the scales occur singly on the 



