102 ROBERT NEWSTEAD—OBSERVATIONS ON 
Anal ring with ten long stout hairs. There are 3-5 short spines of varying 
lengths at the margins of the anal cleft; but there are none at the margins of 
the body ; there is, moreover, no trace of any stigmatic clefts or of the spines 
which usually accompany these structures. Derm, immediately opposite the base 
of the anal bilobed plate, with several spinose hairs, some of which are very 
long or equal in length to the longest axis of the plate. There are usually five 
cribriform circular plates arranged in two longitudinal and slightly divergent 
series. Length, 38.50-4 mm, 
Female, young adult——Dusky red-brown, brown or smoky brown, generally 
protected by a thin coating of grey or ochreous and somewhat granular secretion. 
Rather elongate and shaped somewhat lke a Lecanium; dorsum with a very 
pronounced keel, at the base of which is a regular series of short transverse 
ridges, interrupted in the centre by a deep longitudinal groove. What the insect 
is like in life it is not possible to say ; but it is quite evident that the transverse 
ridges which are so clearly indicated in the dried examples correspond with those 
found in the tests or ovisacs of the old adult females. 
Male puparium.—Ochreous buff or pale straw-coloured, rarely creamy white ; 
form normal; transverse segmentation or ridges generally distinct. Length, 
1.50-2 mm. 
On Acacia arabica ; Ezbet el Nakhl, Egypt, November, 1909 (F. C. Willcocks) ; 
and on the same kind of tree in Upper Egypt, above Aswan, July, 1909 
(F, Hughes); also on Ficus sp., near Cairo, summer, 1909 (/. C. Willcocks). 
Lecaniodiaspis mimosae (Maskell) is, as far as I can gather, the only other 
African representative of the genus. ‘This species was considered by Maskell* 
as only a variety of his L. prospodidis, Cockerell,t however, raised mémosae to 
specific rank, though he has not, to the best of my knowledge, stated his reasons 
for doing so. Recently I had thought that Z. africana might be specifically 
identical with Maskell’s mimosae ; but Maskell (doc. cit.) distinctly states that the 
“feet” are absent in his “. prospodidis, and that as far as he could see “ there is 
nothing but size and colour” to distinguish his var. mimose from it. I have 
come to the conclusion, therefore, that as L. africana possesses relatively well 
developed legs it cannot be referable to either of Maskell’s species, 
Tachardia longisetosa, sp. n. 
Test of adult female.—Smoky ochreous buff to dusky amber-yellow. Isolated 
examples are distinctly hemispherical in form, with strong and somewhat wavy 
ridges radiating from the dorsum. Central orifice distinct and surrounded by a 
dull crimson area. Diameter, 3-5 mm. 
Female, adult,—Ovoid in outline, after maceration in potash. Antenne absent. 
“ Lac tubes” very short and much more transparent than in 7’. decorella, Mask. ; 
sub-central group of pores compact ; outside the central compound group are 
several (17-20) circular pores irregularly scattered over the broader portion of 
the structure ; surface evidently reticulated. Anal spine distinctly funnel-shaped. 
Anal process prominent ; anal ring with ten very long hairs projecting con- 
siderably beyond the pointed dorsal process (? modified anal lobes) ; the latter 
* Trans, N. Zealand Inst., 1896, p. 316. 
ft Check List, Supp. p. 392 (1899), 
