314 F. ERNEST GREEN, REMARKS ON COCCIDAE. 
by a Braconid wasp, and are attacked by the carnivorous 
caterpillar of a moth (Æublemma sp.). 
6. Tachardia aurantiaca, Cockerell. 
Originally described from Citrus. Mr. Jacobson sends me 
examples (Nos. 1133, 1187, 1203, 1279 and 1551) on Fla- 
courtia, Ramontchi-L'Hérit. Semarang, Java. I have previously 
received the same species from Java, collected by Dr. A. Zim- 
mermann, on Albizzia. 
__1 have little hesitation in ascribing this material to auran- 
tiaca of Cockerell, though there are some slight discrepancies 
in the description. That anthor’s diagnosis is admittedly drawn 
up from immature or imperfect material. He deseribes the 
insects only from what he believes to be the second (nymphal) 
stage. From the more ample material now at my disposal, I 
am inclined to believe that Prof. Cockerell’s »second stage« 
may be really the early adult female. He remarks that he 
found no dorsal spine. In many of my examples this spine is 
missing, though all the other organs are identical in character 
with those of the mature insects. The usual dorsal spine is 
conspicuous in perfect examples. It has a broad chitinous base 
which is attached to a very slender fleshy stalk and is easily 
detached from its support. The triangular chitinous porous 
plates, described by Cockerell, are similarly borne upon pro- 
minent fleshy processes, of such a delicate nature that — when 
flattened down by the pressure of the cover slip — they 
become invisible and the chitinous plates appear to be sessile. 
The following description is drawn up from a good series of 
fresh examples. 
Resinous test of adult female (fig. 1) circular, sub-hemi- 
spherical, somewhat flattened dorsally: the larval pellicle 
forming a crenulated ridge in the centre of the dorsal area: 
anal orifice circular or broadly oval, its posterior rim raised 
into a prominent tooth-like point: respiratory orifices small, 
very slightly prominent, situated one on each side of and 
