134 CHAS. K. BRAIN. 



Puparium of £ similar, but smaller and more elongate, with the first exuviae near 

 one end, covered, yellow to orange when rubbed. 



Adult $ with body very highly chitinised when mature, and highly conical, 

 retaining this character when boiled in KOH, so that it is impossible to mount 

 specimens flat without splitting them. When mounted the body is highly chitinous, 

 with the segmentation intensified by thickened ridges of chitin at the edges of the 

 segments. In shape the body is very short in comparison with its width, being 

 broader than long. The cephalothoracic area is larger than the abdominal region, 

 and the pygidium is short and flat, not pointed as in articulatus. The articulation 

 is distinct, but not deep at the margins, and there is no process on the lateral 

 margin. The lobes and plates are small and comparatively delicate, as shown in 

 the illustration (fig. 105). Circumgenital glands 0. 



Habitat : On Arihrosolen polycephalus (Thymeleaceae), a small native veld bush 

 with numerous slender branches and narrow leaves, Belmont, Griqualand East ; 

 collected by F. Thomson, 2nd April 1915 ; and on the same plant at Middelburg, 

 Cape, by the writer, November 1916. 



Collection No. : 227. 



90. Aspidiotus (Selenaspidus) Silvaticus (Lindinger) (Plate vii, fig. 106). 



Selenaspidus silvaticus, Lindinger, Jahrb. Hamb. Wiss. Anst., xxvi, p. 10, 1908. 



The illustration shows the pygidium from a specimen collected on Aberia caffra. 



The scales of this species vary considerably in size and colour on different host- 

 plants. The following variations may be noted for South African material : — 



(a) On stemfruit (Transvaal, Collection No. 246). 



Scale of $ circular or nearly so, brown, or in old specimens pale buff or 

 almost white, flat, to 2 mm. in diameter. First exuviae naked, metallic, 

 brassy or bronze ; second exuviae covered, brownish. Puparium of <$ 

 smaller, horn-brown, with yellowish or brassy exuviae. 



(b) On Dracaena australis (East London, C.P., Collection No. 231). 



Scale of adult $ large, may reach 2'7 mm. for longest diameter, + cir- 

 cular or elongate oval according to position on leaf, flat, thin, dull brown 

 with paler margins. Exuviae central, flat, greenish, yellowish or metallic 

 and brassy. Puparium of <^ smaller, brown. 



(c) On Euonymus (Natal, Collection No. 232). 



Scale of adult $ to 2"5 mm. in long diameter, almost circular when not 

 against midrib or margin of leaf, flat, dull, thin, dirty brown in colour, with 

 + metallic, yellowish exuviae. Puparium of $ flat, small, brown, with 

 yellowish exuviae. 



Habitat : On Aberia caffra, Uitenhage, C.P. ; collected by OP. Lounsbury, 2nd 

 August 1906. On palms, tea and citrus, Natal ; collected by C. Fuller. On 

 Euonymus, Natal ; collected by C. Fuller. On stem-fruit (Chrysophyllum magalies- 

 montana), Nelspruit ; collected by T. R. Sim, January 1908. On native tree, Kei 

 Valley, C.P. On Berberis, Irene, Pretoria, July 1913, and on ivy. 



Collection Nos. : 203, 222, 228, 228a, 231, 232, 245, 246, 247 and 248. 



