AFRICAN SCALE INSECTS (COCCID®). 101 
of Tropical Research, Liverpool University, I referred the species doubtfully to 
the genus Antonina, and, at the time, gave it the provisional specific name 
africana. A copy of my report was also forwarded to Mr. Draper, the Delta 
Barrage Gardens, Cairo. Unfortunately the specific name was published (sine 
descr.) by the respective authorities inadvertently, and until now I have been 
unable to deal with the matter as the original material together with a number of 
other Egyptian Coccids was accidentally destroyed. Now, thanks to Mr. 
Willcocks, who has sent me a number of females in various stages, I have been 
able to make more extended observations and furnish details regarding the struc- 
tural characters of the insect. 
Female ovisac.—Very closely felted and almost wax-like in appearance. 
Cream-buff or straw-coloured, becoming greyer after long exposure. J*orm short 
ovate and very highly convex ; posterior half with a faint trace of a short median 
ridge, but this is, in old examples, more or less broken up into a series of faint 
tubercular projections ; on either side of the central ridge are a number of trans- 
verse ridges, varying in intensity according to the age of the individual, but in all 
cases they are interrupted centrally, and in old examples they are often repre- 
sented merely by minute tubercular projections. Average length, 5 mm.; width, 
3.50 mm. 
Female, adult.—V ery short ovate or sub-circular in outline, after maceration in 
potash. Antenne (fig. 13, a) of seven or eight segments ; sixth with one, eighth 
Fig. 13.—Lecaniodiaspis africana, Newst. ; a, antenna of female ; b, leg of female ; 01, curious 
form of the trochanter, as seen in some individuals ; c, mentum ; d, spinneret. 
with three rather straight and obtusely pointed spines; there is a slight 
variation in the relative length of the individual segments and also asym- 
metry. Legs (fig. 13, 4) present but atrophied, length less than that of the 
antenne ; claws with a distinct ventral tooth. The whole of the dorsal surface 
of the derm is thickly and evenly studded with 8-shaped glands, all of uniform 
size and structure, but they are generally tilted so that the double orifice, which 
gives them the characteristic 8-shaped appearance, is rendered invisible. Anal 
segment with a rather shallow cleft which is closed ventrally, as in other members 
of the genus, with a large bilobed plate, each lobe being approximately triangular 
in outline, bearing a short stout spine at the apex and two or more near the base. 
20419 B 
