238 CHAS. K. BRAIN. 



" Habitat : Sudwestafrika, Gross-Namaland, Chamis am Koankil, Sept. 1905. 

 L. Schultze. On Rhus lancm, L.f." (Newstead). 



145. Chionaspis Africans, Newst. (Plate, xvi, fig. 159). 



Chionaspis africana. Newst., Zool. Anthr. Ergeb. West! Zentr. Sudafr., p. 19, 

 1912. 



"Pupariuni of female. Bather elongate, widened posteriorly; secretionary 

 portion dense, pure white and faintly but irregularly striated ; pellicles yellow. 

 Length, 2 mm. 



" Female, adult. Ellipsoidal ; segmentation in macerated example, very faint. 

 Antennae with one very long apical spine and one minute sub-basal spine. Anterior 

 pair of spiracles with 4-5 parastigmatic glands close to the anterior margin of the 

 orifice ; posterior pair similar, parastigmatic glands apparently absent. Pygidium 

 large ; circumgenital glands in five groups, formula of one example : — 



14 

 18 19 

 16 18 



" Anal orifice opposite the lower lateral groups of circumgenital glands ; position 

 of vaginal orifice doubtful ; dorsal glands in two short series, the first the longest, 

 reaching to the distal part of the lower lateral group of circumgenital glands. 

 Margin of pygidium with three pairs of very short lobes, of which the second and 

 third are duplex. There are four bilateral spines ; but the squames are either 

 entirely wanting or quite rudimentary and not traceable in the preparations. 

 Length, 1"25 mm. 



" The distinguishing morphological characters of this insect are the more or 

 less rudimentary lobes and the relatively few dorsal glands. 



" Habitat : Sudwestafrika, Steinkopf (Klein Namaland), 1904, L. Schultze. 

 The food-plant is not given, but the puparia were attached to the slender stems 

 of a grass-like plant " (Newstead). 



146. Chionaspis (Poliaspis) kiggelariae, sp. n. (Plate xvi, fig. 163). 



Scales clustered into large wart-like masses on the twigs and stems of food-plant. 

 Majority of scales arranged around the twig, very few with the long axis along the 

 stem. 



Scale of adult $ large, about 3 mm. long, narrow in front, gradually widening 

 to beyond the middle and moderately broad and roimded behind, smooth, faintly 

 glossy, without distinct growth-lines or covered with a matt deposit which is 

 greyish or yellowish. On willow the clusters of $ scales appear greyish white 

 rather than pearly, owing to the admixture of fragments from the bark of the 

 host-plant. Exuviae yellowish to bright reddish-brown ; second exuviae faintly 

 covered. 



Male pupariuni comparatively small, non-carinate, with pale yellowish or brownish 

 exuviae. 



