The Coccidae of South Africa. 
185 
The main difference between the two is the entire absence of mouth- 
parts in the pupal stage. 
In both forms the body is almost spherical, but slightly longer than 
broad, and slightly broader than thick. They are semi-transparent, and 
yellowish in colour. 
The integument is smooth and shiny (in spirits), but slightly stippled 
when cleared and seen under the microscope. There are no traces of legs 
or antennae, and no signs of segmentation, except as indicated by the 
arrangement of the spiracles. 
In the prae-pupal stage mouth-parts are present. They are compara- 
tively small, with a very short single-jointed mentum, and a long delicate 
rostral loop. In both stages there is a conspicuous series of marginal 
spiracles which consists of 18 single pores, nine on each side. In addition 
to these there are two subdorsal pores, one on each side at about one- 
third the length from the anterior extremity ; and a single ventral pore 
close to the mouth-parts in the prae-pupa and in same position in the 
pupa. 
The anal opening is small and is represented in both stages. In the 
prae-pupa there are four glandular discs, two on each side of the anal 
opening, each with two to four small circular openings. In the pupa 
there appears to be but two of these, the outer pair being absent. 
Adult 2 : The adult $ varies greatly in size, the largest specimens in 
the collection being 5 mm. long (spirit material) and 7'4 mm. (mounted). 
The body is sordid white to yellowish except the claws which are 
brownish-black. The segmentation is very distinct. On the ventral 
surface the segments are represented by deep transverse furrows, and 
appea.r crowded together, while those of the dorsum are broad and flatly 
rounded. 
The antennae appear 7-jointed in unstained material, but when stained 
the large second joint always exhibits two whorls of hairs, and there is a 
distinct articulation. Joint I. is broad, and more delicately chitinized than 
the others ; II. is very short, annular, with an apical whorl of bristles ; 
III., broader and longer than II.; IV., V., VI., and VII. gradually 
diminishing in width, each with apical whorl of bristles ; VIII. truncate, 
flatly rounded at apex (Fig. 69). 
The dermis is coarsely shagreened, and is characterized by numerous 
bristle-like hairs and rows of short, stout, conical spines on the thoracic 
and abdominal segments. 
Larva (from a slide made by C. Fuller, 1898) : Very long and narrow 
(0-924 X 0*23 mm.) almost vermiform. Antennae short, close together, 
as far as can be determined, of two joints ; basal cylindrical, slightly 
longer than broad ; apical joint elongate, swollen, almost pyriform, apex 
with numerous bristles. 
