21 
PLATE VI. 
ILLUSTRATIONS OF VARIOUS SPECIES OF COCCIDjE, BELONGING TO 
THE GENUS MONOPHLEBUS. 
The family of the well-known scale insects, Coccidae, presents to 
us some of the most singular of annulose animals. Without speak¬ 
ing of their singular habits, we find some of them on arriving at 
their last state, so far departing from the typical characters of the 
winged insects, as to prove that Ptilota may exist, which in the 
imago state are not only wingless, but also footless, and antennae- 
less, and in which even all appearance of annulose structure is lost, 
the creature in fact becoming an inert mass of animal matter; a 
slender seta arising from the breast, and thrust into the stem or leaf 
on which the animal is* fixed, being the only external appendage 
to the body. Such is the case with the imago state of the females 
of many of the species—the males on the other hand are small, 
active-winged creatures provided with legs, long antennse,and anal 
filaments ; but, as if to keep up the anomalous character of the 
group, even these males possess but a pair of wings, the wanting 
pair being represented by two small appendages, somewhat like the 
halteres of the Diptera. 
Some of the females are, indeed, more active than those 
mentioned above; they, however, undergo no change from their 
larva state, but continue to creep about with short legs and rudi- 
mental antennm, and are always destitute of wings. Such is the 
case with the females of Pseudo-coccus, Westw. (Coccus # , Burm .) 
Cacti, Adonidum, &c., and with those of the genus Monophlebus of 
Leach. In the females of the former genus, the body is covered 
with a -white powder, and the sides furnished with appendages. 
These are well known to horticulturists under the name of the 
Mealy bug; whereas in Monophlebus, the females have the body 
naked, without either lateral appendages or anal filaments. Such 
at least is the case with the European species, M. fuscipennis, 
Burm an insect I had the pleasure to capture, in company with 
its talented describer, Burmeister, on the trunks of fir-trees, in the 
Thiergarten, near the Brandenburg Thor of Berlin. The males 
have very long multiarticulate verticillated antennse, which, with 
* I regard the Coccus of the ancients, the female of which is fixed and gall-like, as the true 
type of Coccu8. 
