ALEURODICUS ORNATUS. 65 
the dorsum and from them is produced the waxy secretion before 
mentioned. On the dorsum of case are the usual compound wax 
pores (PI. XX, figs. 4, 5) from which arise the long curling wax rods. 
In the present species the pores are unusually large, measuring 0.064 
mm. in diameter. These pores occur as follows: Four pairs on the 
abdominal region, two pairs of smaller pores on the caudal end of 
case, and two on each side of the vasiform orifice. On the cephalic 
end of the case is also a pair, though they are somewhat smaller than 
the pores on the abdomen. 
Within the margin of the case all around is a row of spines, 11 or 
12 to each side. There is also a pair of spines just cephalad of the 
vasiform orifice. 
Vasiform orifice (PI. XX, fig. 3) subcordate; operculum rectan- 
gular, about half filling the orifice, the caudal margin notched on 
each side, and bearing a pair of spines. Lingula exserted, elongate, 
and narrowed distally more than usual and with two indentures on 
each side near end, from each of which arises a strong, often curved 
spine. On the ventral surface the legs and antennae are distinct. 
Adult female. — Length of body about 1.7 mm. Length of fore- 
wing 2.27 mm. ; width 1.15 mm. Antennae (PL XX, fig. 10) seven- 
jointed, usual; third segment 0.26 mm. in length; hind tibia 0.81 mm. 
in length ; first tarsal segment 0.2 mm. in length and distal segment 
about half as long. 
Color rather uniformly yellow to darker, legs and antennae paler, 
eyes greenish. Forewings (PI. XX, fig. 7) of both sexes with dusky 
markings. Hind wings unspotted. Wing surface somewhat irides- 
cent. Adults seem to occur promiscuously among the pupae, more 
or less covered by the waxy secretion of the immature stages. 
Type. — No. 14774, U. S. National Museum. Described from abun- 
dant material of infested foliage and eggs, pupae, and adults in bal- 
sam mounts. 
Aleurodicus ornatus Cockerell. 
(PI. XXII. figs. 1^.) 
Aleurodicus ornatus Cockerell, Ent. Mo. Mag., vol. 29, p. 105 (1893). 
We know this species only from the type material in the U. S. 
National Museum (type No. 14773). 
ORIGINAL DESCRIPTION. 
The imago, from head to the tip of the wings, measures somewhat over 2 mm., 
and structurally agrees so well with the two known species of the genus, that 
I should not have ventured to bring it forward as new, were it not for the beau- 
tiful grey markings of the narrower upper wings. These markings, which dis- 
tinguish the insect at a glance, consist of four broad, transverse gray bands, 
and a longitudinal band running from the outermost to the margin a little 
