The Coccidae of South Africa. 
181 
in front of the spine ; the anterior keels converge to a nodule in the middle line, forming a 
reversed V; and there are blunt lateral keels, including the subdorsal protuberances, crenu- 
late posterior to them. Margin with about fourteen tooth-like dull white protuberances on 
each side, these being really lamellae of dense wax ; from about the bases of these lamellae 
come some very fine silvery threads. 
Still younger forms have the dorsal spine arising as a transverse fold. The cast skins 
of the young forms are snow-white, much as in Icerya, with a fringe of waxy lamellae. 
The legs and antennae of the young are large and ferruginous. 
The legs and antennae seem to come to their full development in individuals little over 
5 millim. long. 
Antennae 10-jointed, the joints after the third greatly bulging on one side, the sutures 
therefore very deep ; last joint long and falciform. Measurements in fx : — (1) ? ; (2) 90 ; 
(3) 90 ; (4) 60 ; (5) 60 ; (6) 70 ; (7) 70 ; (8) 75 ; (9) 75 ; (10) 216 to 294. Joints 2 and 3 are 
broader than long. Young examples have atennae 8-jointed ; club ordinary. 
Legs well developed, little hairy ; tarsus half length of tibia ; inner side of tibia with 
extremely short spines. Mouth-parts well developed. Skin strongly chitinized, very 
densely beset with short hairs ; the blunt hairs of some Monophlebids are represented 
by stout hairs with lanceolate heads ; small round glands interspersed, not nearly so 
numerous as the hairs ; there are also larger round or suboval brown spots, arranged 
more or less in rows. Below the mouth there are two large apertures in the chitinous 
surface, more or less connected in the middle line, and at the next suture beyond there is 
a large transverse aperture. Spiracles well developed." 
On Acacia spp. Bathurst and East London (CP.) Ladysmith (Natal), 
Estcourt (Natal), and Eustenburg District of the Transvaal (F. Thomsen). 
Collection No. : 15. 
56. AspiDOPROCTUs PERTiNAX (Newstead). 
Walker ina pertinax, Newst., Proc. Zool. Soc, Lond., pp. 947-918, 1900. 
Professor Newstead's description (omitting figure references) is as 
follows : — 
" ?. Adult dark castaneous, slightly shining; form above generally highly convex 
and evenly rounded, forming an almost complete hemisphere, but one specimen was 
decidedly more elongate and less convex ; cephalic area suddenly constricted, much 
wrinkled and furrowed at the sides, and with 4-6 large, deep, and variously shaped punc- 
tures; margin in front emarginate, and within a broad, deep, upward-sloping, central 
groove, surmounted on either side by a strongly-rounded ridge. Subdorsal and marginal 
rows of very short, stout, dusky- white, waxy processes, placed close together, and gradually 
lessening in size from the centre towards the extremities ; there is also a double dorsal 
row of much smaller processes, which also lessen towards the extremities, the largest pair 
occupying almost a central position. Much mealy substance is scattered round the base 
of the waxy processes, and the hollows and wrinkles are covered with the same material. 
"Underside flat or slightly concave, with radiating grooves, more or less covered with 
white mealy secretion ; sides sharply raised. Antennae of 10 joints, of which the terminal 
one is much the longest, and, with the exception of the first, all the joints are furnished 
with short, fine hairs : formula 10, 1, 2, 3, (4, 5, 6), (7, 8, 9). Legs very small; digitules 
to claw simple. Eostral apparatus present, but owing to the density of the surrounding 
tissues it is impossible to make out its true character. Ventral opening very large, some- 
what hexagonal and without marginal hairs, the whole aperture covered by a thin 
