188 Transactions of the Boyal Society of South Africa. 
black in outline, inner edge thinner, red-brown in transmitted light, with 
the inner margin entire, not crenulate as in peringueyi. 
Habitat : At roots of grass, Pretoria, October, 1914. Cysts collected 
by the writer. Material studied consists of a number of cysts and two 
adult 2 2 . 
I have pleasure in associating the name of Prof. E. Newstead, F.E.S., 
with this species. 
Collection No. : Y.C 10. 
61. Margarodes peringueyi sp. n. 
(Plate XXVIII., Fig. 72.) 
Cyst : Almost spherical, about 2 to 2*5 mm. in diameter, milky-white 
in colour, translucent. Cysts collected at roots of grass by waiter at 
Pretoria, October 4, 1914, and placed in a damp cell made by lining 
a deep petri dish with moist filter-paper. Adults began to emerge on 
October 12, 1914. 
Adult 2 : 2*5 to 3 mm. long, when extended, creamy white to pale 
yellow in colour with a median dorsal region which sinks below the lateral 
areas, and through which the darker body contents are visible. 
When moving the body is broadly oval in outline, slightly narrowed in 
front ; segmentation plainly visible. The insects are positively thigmo- 
tactic, and wandered around aimlessly until they had forced their way 
between the edge of the filter-paper and the dish, and invariably came to 
rest between the paper and the bottom of the dish. 
The antennae are distinctly 8-segmented (stained material) the small 
joint II. more distinct than in cayensis, nearly half the length of III. 
The dermal hairs and spines numerous and normal. 
Habitat : Very common in Pretoria and district at roots of grass. It 
has been collected in large numbers in lawns and also in the veld. The 
characteristic odour is strongly developed in this species when first 
moistened. Some specimens collected in a garden in Pretoria by Miss 
Impey included adult ? 2 which had left the cysts and were enclosed in 
white cottony secretion in small lumps of soil. Eggs were laid by these 
? $ in January, 1915, but larvae were not observed. 
Material studied consists of a number of cysts and 4 adult $ ? 
mounted. 
It gives me great pleasure to associate the name of Dr. L. Peringuey, 
Director of the South African Museum, Cape Town, with this species. 
He was one of the first naturalists in the country to recognize the true 
nature of these interesting insects. 
Collection No. : 10. 
