68 CLASSIFICATION OF THE ALEYRODIDJE. 
A. ornatus is " grey." No author mentions dark longitudinal brown bands, such 
as those which are so conspicuous in A., pulvinata. What is much more impor- 
tant, in A. anofUE Mr. Morgan gives fourteen " lateral infundibuliform compound 
spinnerets" and "secreting glands." A. cocois (ap. Riley and Howard) has 
also fourteen; A. ornatus has glands "practically as in A. anonw;" but in 
A. pulvinata there are twenty-two of these organs. No author mentions minute 
dorsal spinnerets within the margin, such as those which are so extremely 
numerous in A. pulvinata; yet, as these appear to be certainly the producers of 
the ring of waxy threads, they are of importance. As regards the vasiform 
orifice and lingula, I find those of A. anonw (which Mr. Morgan curiously terms 
the anus, colon, and ilium") and those of A. cocois not greatly dissimilar: in 
fact, they may be said to be practically identical. These organs are not men- 
tioned for A. ornatus. In the figure 41B of A. cocois (Ins. Life. 1S93, p. 314) 
the lingula of the adult female is shown as protruding considerably from the 
abdomen; probably this will also be the case in A. pulvinata. 
I believe that the wings of A. pulvinata will be not far removed from the 
darkly banded ones of A. ornatus, but in the face of the statement that the 
" larva " of that species is " grey," and in the absence of any further informa- 
tion, I shall not at present so identify the insect, nor shall I yet relegate it to 
the genus Aleurodicus. 
DESCRIPTIVE REMARKS. 
Pupa ease. — Size 1.33 mm. long b} 7 1.15 mm. wide; very roundly 
elliptical, but little convex (PI. XXII, fig. 6). As described above, 
there are along each side two broad and irregular longitudinal bands 
of dark-brown color in the derm, and there is a light yellow T or semi- 
transparent longitudinal band along the central dorsal area. We are 
unable to verify Maskell's description in reference to the "twenty- 
two tubercular pores, glands, or spinneret orifices." It seems clear 
that the tubercles of certain spines were mistaken for wax pores. On 
the type specimens the tubercular spines are to be made out with 
considerable certainty, a series all around case, well within the mar- 
gin, 10 or 11 on each side, as shown in the figure. There is also a pair 
of spines on caudal end of case. There are seven pairs of compound 
wax pores (PI. XXII, fig. 8), one on cephalic end, and on the abdo- 
men are four pairs of large and two pairs of small pores. There is a 
pair of spines just cephalad of the vasiform orifice, and three pairs 
on the thoracic region toward the median line. Also on the thorax 
are two pairs of stellate, transparent spots. The margin of case is 
entire. Just within margin all around is a closely set row of minute 
tubular wax pores resembling those in cocois. Also as in cocois, there 
is on the submarginal area all around a broad band of minute simple 
wax pores. 
Vasiform orifice (PI. XXII, fig. 7) broadly cordate, broader 
than long, cephalic margin straight. Operculum considerably broader 
than long, anterior margin straight, sides rounded, caudal margin 
concave and minutely setose, bearing distally two pairs of spines. 
