THE COCCIDAE OF SOUTH AFRICA. — HI. 215 



Second exuviae, which enclose the adult $, broad pear-shaped, about 1 mm. long 

 and 0"7 mm. broad. They are moderately chitinised and yellow-brown when cleared. 

 The pygidium is as illustrated in Fig. 135. The adult $ is smaller, about 0"8 mm. 

 long, and 0'55 mm. broad, + hyaline. 



Habitat : On the leaves of a native plant (Ehretia hottentottica), Pretoria ; collected 

 by the writer, 3rd July 1915. 



Collection No. : 255. 



115. Aonidia chaetachmeae, sp. n. (Plate xiv, fig. 134). 



Scale of adult $ small, about 1 mm. long, + pyriform, with irregularly crenulate 

 edges, dull pitch black in colour, with a scanty white layer of waxy secretion, which 

 is most noticeable around the margins. The larval exuviae are central, raised, black, 

 with dark brown margins. The hard, black, second stage skin is moderately convex, 

 and in some cases the crinkled margins give them a shell-like appearance. The 

 pygidial margin is often rich brown instead of black. 



The puparium of the <$ is rather elongate, about as long as the $ scale but with 

 sides more parallel, buff-coloured, translucent, with exuviae nearer the anterior 

 end. The posterior portion of the secreted substance is paler in colour. The larval 

 exuviae are of the same size as those of the female scales, black, with brown margins. 

 The second exuviae, which enclose the adult $, are very dense, blackish brown when 

 boiled in KOH and cleared. These have a remarkable shape, with the whole 

 margin thickened and broadly crenulate or scalloped, and with the lateral margins 

 of the pygidial area parallel. This gives the appearance of the hind extremity being 

 sharply cut off, as the posterior margin is more delicate. The adult $ is about 

 0*7 mm. long, broadest at about the level of the mouth-parts and tapering acutely 

 to the pygidium. The antennal tubercles are small, with one long, curved, spine. 

 Parastigmatic glands 0. The pygidium has two pairs of well-developed lobes. L x 

 large, with the inner margins parallel, notched on each margin ; L 2 smaller, close to 

 L ls steep on inner side and sloping outer edge. Spines, etc., as illustrated (fig. 134). 

 Circumgenital glands 0. 



Habitat: On " umkavoti " (Chaetachme aristata, Planch.), Durban;' collected 

 by C. Fuller, 12th October 1914. 



Collection No. : 286. 



116. Aonidia rhusae, sp. n. (Plate xiv, fig. 137). 



Scale of adult $ about 1*5 mm. long, brown, or blackish brown, owing to the 

 black second stage skin showing through the brownish dorsal scale. The dorsal 

 scale is comparatively large and robust, brownish in colour, probably from the 

 admixture of epidermal tissues. Exuviae central, dark brown. 



The puparium of the male is almost circular to elongate oval, somewhat conical, 

 smooth, parchment-like, buff, or brownish with dark brown central exuviae. 



Female, second stage, from the second exuviae which enclose the adult $, elongate,, 

 about 1*3 mm. long, and 0'8 mm. broad, highly chitinised, brown, with the median 

 portion blackish. It is broadly rounded in front, widest at about the middle and 



