THE COCCIDAE OF SOUTH AFRICA. — III. 235 



Male puparium small, white, with orange exuviae, smooth to faintly carinated. 



Adult $ (mounted) l - 4 mm. long, broadly oval, not much narrowed at either end. 

 Anterior two-thirds moderately chitinous, yellow, posterior third colourless, trans- 

 parent. The pygidial margin is richly supplied with gland openings, which form 

 practically a continuous row, in some places two deep. The rows of dorsal glands 

 are interrupted, the last arising from the margin with two or three openings and then 

 interrupted to near the anal opening, where there are 2 or 3 others. The penultimate 

 row has 3 or 4 near the margin, then two groups of 2 to 4 on each side to just beyond 

 the anus. The lobes and plates are small, as shown in fig. 156. Circumgenital 

 glands in 5 groups : — ■ 



2—4 

 14—20 14—20 

 19—22 19—22 



Habitat : On Euphorbia, in association with Hemilecanium sp. and Selenaspiclus 

 pertusm, East London, C.P. ; collected by Miss Impey, 23rd June, 1915. 

 Collection No. : 151. 



140. Chionaspis chaetachmae, sp. n. (Plate xvi, fig. 157). 



Scale of adult $ large, 3 to 3 4 mm. long, elongate, white, smooth, glossy, very 

 long and narrow. Exuviae brownish ; second exuviae completely covered with 

 secretion. Ventral scale apparently formed by the thick inturned edge of the dorsal 

 scale. Many of the female scales are arranged around the extreme margins of the 

 leaves. In a few cases, where holes appear in the leaves the margins of these are 

 also edged with § scales. 



Male puparium about 1 mm. long, very flat, white, non-carinated ; exuviae straw- 

 coloured. 



Adult $ about 2 mm. long, narrow in front and gradually broadening until about 

 the posterior third or suddenly widening to region of mouth-parts and then almost 

 parallel-sided to the rounded pygidial margin. Body integument delicate, not 

 chitinised, except mouth-parts and lobes. The pygidium is regularly rounded. The 

 last row of dorsal glands does not reach the margin, but consists of 7 to 9 pores 

 sloping outward and backward from the level of the hind margin of the anal opening. 

 The lobes and plates are as illustrated in fig. 157. Circumgenital glands in 5 groups : — - 



4—9 

 16—23 16—23 

 36—46 36—46 



Habitat : On " umkavoto " (Chaetachme aristata), Durban ; collected by 0. Fuller, 

 12th October 1914. 



Collection Nos. : 152 and 152a? 



141. Chionaspis (Phenacaspis) visci, sp. n. (Plate xvi, fig. 160). 



Scales massed on stems of host-plant. 



Adult $ scale about 2'2 mm. long, elongate, + parallel-sided, convex, usually 

 straight, + silky, white, with transverse ridges small, numerous, close together. 

 First exuviae greyish or brownish ; second exuviae covered, brown. 



