50 
CLASSIFICATION OF THE ALEYRODIDiE. 
found and carefully studied. It is flattened, of short, oval form, 1.02 mm. long 
and 0.84 mm. wide. The legs are plain and are short, stout, and apparently 
three-jointed. The basal joint is very stout, nearly as broad as loug; the 
second joint is slender, about twice as long as broad; the third joint is very 
short, and bears a single, stout, curved hook. The rostrum is distinct, one 
jointed, and three filaments protrude. Each abdominal segment bears laterally 
a large, complicated pore, from which protrudes a glassy filament, short in this 
stage, but very long in the following. A smaller pore is situated just laterad of 
the base of the antenna and those on the anal and pre-anal segments are smaller 
-than those on the others. Antenna? six-jointed. Joint 1 short, stout; joints 
2 and 3 long, sub-equal in length, and each five times as long as 1; joint 4 
one-half as long as 2 or 3 ; joint 5 one-half as long as 4, sharply pointed at tip. 
Dorso-anal pore large, distinct ; protrusile organ conical in shape, supported by 
a tri-lobed chitinous framework. Entire dorsal surface of body finely granu- 
late, the ventral surface granulate laterally to the large pores. Each ventral- 
abdominal segment bears a transverse row of eight small secretory pores, each 
of which seems to be tri-cellular. 
Adult larva (fig. 40) [fig. 9]. — Closely resembles the preceding, except that 
it is much more convex, and has very long glassy filaments and an abundant 
Fig. 8. — Aleurodicus cocois: a, Egg; b, first larva; c, leg of same; d, intermediate larva, 
dorsal view; e, protrusile organ of same; /, secretory pore of same; </, intermediate 
larva, ventral view; h, margin of body of same. (From Riley and Howard, i 
secretion of white wax. Abdominal segments very distinct, arched anterodor- 
Bally, with a medium longitudinal ridge. The skin of this larva splits 
transverso-dorsally along the hinder edge of the thorax, and from the middle 
of this slit medially and longitudinally to the cephalic end of the body. From 
this double slit the pupa presumably emerges. 
Adult female (fig. 39, </) (fig. 7, a |.— Length. 2.1 mm.; expanse, 4.1 nun. Color 
dull honey-yellow; eyes darker ; abdomen, when swollen with eggs, niueh lighter 
and bordered with abundant waxy secretions. Antennae six-jointed. Basal 
Joint short, stout: joint 2 (scape) twice as long, equal to it in width: flagellars 
rugoso-annulate ; joint 3 longest, more than twice as loug as 1 ami 2 together, 
and equal in length to 4, 5, ami <; together. In dried specimens it becomes espe- 
cially constricted at two points; joint 1 rather more than hall' as long as .'i ; joint 
5 less than half as long :is I ; j.»in <; equal in length to 6. .Toiut <; with a bristle 
at tip, the other joints with Sparse, short bristles. Head conical when seen 
from above, the rostrum plainly 2-jOlnted, hut perhaps with a basal joint; the 
apical joint acute, nearly as ion- as the preceding joint, lives pyrlfonn, large. 
