208 CHAS. K. BRAIN. 



The cephalothorax is flatly rounded in front, deeply separated from the abdomen, 

 and occupies about two-fifths the length of the body. The abdominal segments- 

 are not so distinctly divided as in the majority of species in this genus. 



Pygidium as illustrated (fig. 128). The reticulated area is not composed of large, 

 well-developed areas as in many species, but gives one the impression rather of 

 fat globules. There are indications of 4 pairs of lobes. L x close together, uniformly 

 rounded as illustrated, or with outer edges more sloping and slightly notched ; L 2 

 short ; L 3 longer than L 2 , often rounded at apex, with outer edges sloping and once 

 notched ; L 4 similar to L 3 . Beyond these the margin is thickened and severa times 

 indentate. The first one or two projections might be looked upon as rudimentary 

 lobes. The plates are thick, + parallel-sided, often curved towards their tips and 

 hyaline. The formula would be P 1S L 15 2P 2 , L 2 , 3P 3 , L 3 , 3P 4 , L 4 , 1-3P 5 . The 

 spines are short and stout. There is one on each surface of the pygidium between 

 L 2 and L 3 , one between L 3 and L 4 , one between L 4 and P 5 , and one a little beyond 

 the second projection. There are three pairs of divergent thickenings from the hind 

 margin, furnished with separate + circular knobs. The outer pair are sometimes 

 lacking, except for the knob, which is often + crescent-shaped (fig. 128). The anal 

 opening is far back and appears to be protected by a pair of chitinous plates or a 

 divided flap, which is very conspicuous and looks like a pair of lobes. Outside these 

 the chitin is thickened and extends to the base of the median lobes as two pointed 

 folds, the margins of which are wavy. Circumgenital glands 0. 



Habitat: On stems of tree (Acacia melanoxylon ?) growing in streets of East 

 London ; collected by C. P. Lounsbury, 1898 (Cape No. 1,248). On stems of 

 Acacia melanoxylon, R. Br., Pietermaritzburg ; collected by A. Kelly, 13th June 

 1915. These were associated with a very large flat Lecanwm (sp. indet.). 



Collection Nos. : 219, 219a. 



107. Pseudaonidia glandulosa (Newst.) (Plate xii, fig. 122). 



Aonidia glandulosa, Newst., Bull. Ent. Res., ii, pt. 2, p. 103, 1911. 



Scale of adult § elongate, very occasionally almost circular, about 1 '25 to 1 - 5 mm. 

 in diameter, white at first, sometimes faintly buff, with dark brown or resinous exuviae. 



Puparium of $ similar but smaller, with pale exuviae. 



The body of the adult $ is slightly conical and often appears to be situated 

 in a shallow pit in the stem. It is small, about 0'9 mm. long, and about as wide 

 as long (0'82). At maturity the body- wall is very densely chitinised and is 

 brown or blackish brown when mounted. In immature specimens the body is 

 hyaline, colourless, except the mouth-parts and pygidium, which are yellow. The 

 most striking feature in mounted specimens is the presence of the two large 

 transparent areas in the anterior portion of the body, which appear as two extremely 

 large eye-spots (fig. 122). The cephalothorax is distinctly separated at the margin 

 from the abdominal region ; the anterior margin is flatly rounded from the level 

 of the mouth-parts, where it suddenly slopes straightly inwards, so that at the 

 articulation it is narrower than the abdomen. The segments are not distinctly 

 produced ; the anterior two are broad at the margin, but the third, posterior, is 

 of about equal width in the centre but scarcely represented at the margin. 



