AFRICAN SCALE INSECTS (COCCID&). 91 
five in all, with a single minute spine. Pygidium (fig. 6) strongly produced. 
Median lobes strongly bilobed, the outer lobe angular and tooth-like, the inner 
lobe square at the tip; on either side of the lobes are four large tooth-like pro- 
jections and at the base of each pair a large secreting pore; there are also four 
similar marginal pores extending beyond them. Spines minute, one pair on both 
Fig. 6.—Fiorinia africana, Newst. ; pygidium of second stage female (nymph). 
dorsal and ventral surfaces at the base of the median lobes, and a single one 
between the third and fourth tooth-like projections. Anal orifice central. There 
are a few isolated, circular glands, and a single bilateral pair towards the centre 
of the margin which are united bya spirally striated thickening of the body wall ; 
there are also four similar chitinous patches, but in these the striae are more or 
less longitudinal. Length, 1°75-2 mm. 
Male puparium.—Relatively large, sides more or less parallel, convex for the 
greater part, but with the posterior extremity flattened. Pellicle usually bottle- 
green, but a few examples are dull greenish yellow; in some instances they 
occupy an almost oblique position ; in others they are parallel with the secre- 
tionary portion. Normally they are straight, but in a very large percentage of 
cases they are curved or contorted owing chiefly to over-crowding or to the nature 
of the bark upon which they are fixed. 
On poplar trees ; Garden of the Horticultural Society, Gizeh, Egypt, March, 
1910 (F. C. Willcocks). 
All attempts to separate the adult female from the interior of the nymphal 
skin (second stage female) having so far failed, it has been impossible to define 
all of the morphological characters. Judging from what one has been able to see 
of the pygidium through the integument of the nymph, this insect is clearly 
distinct from any hitherto described species, and structure of this part in the 
nymph will at all times serve as a ready means of determining the insect, 
Parlatoria (Websteriella) zizyphi, Lucas. 
“On orange trees imported from Malta” ; Egypt (Ff. C. Willcocks). 
This pest of the orange and other species of Citrus, cannot be considered as 
newly introduced into Egypt, as examples have been previously received from 
this country. Moreover, it has a very wide distribution, and is found in nearly 
all the orange-growing countries of the world. It is one of the citrus pests in 
Malta, and is there generally distributed over the whole Island. 
