40 CLASSIFICATION OF THE ALEYEODIDiE. 
our specimens, for example, the forewings are slightly shorter than 
the body, while in lahillei they are longer. The wings are also some- 
what different ily marked, as will be seen from the illustrations, and 
the legs are relatively shorter in our specimens. We prefer, however, 
pending a careful comparison of the types, to leave the present form 
under the name of lahillei and give the following descriptive re- 
marks. 
DESCRIPTIVE REMARKS. 
Egg (PL IX, fig. 1). — Length, 0.352 mm. Shape elongate ellip- 
tical, surface unmarked, but numerous oily globules showing from 
within; stalk short, inserted slightly laterad of the base; color yel- 
lowish, with an orange-red area (part of the embryonic structure) 
at or near the base ; red eyespots of the embryo often visible through 
the shell. 
Pupa case (PL IX, fig. 2).— Length, 1.44 mm.; width, 0.88 mm. 
Shape somewhat oval, broadest across the anterior part of the abdo- 
men, narrower cephalad, dorsum slightly rounded, with the seg- 
ments of the abdomen and the median longitudinal thoracic suture 
fairly distinct. There are seven pairs of large wax pores on the 
dorsum, one pair on the thorax, and six pairs on the abdomen. 
The thoracic pair and the four caudal abdominal pairs are of the 
agglomerate type (PL IX, fig. 4). They consist of a clear mar- 
ginal area and a central area composed of numerous small papillae 
or rod-like pores, giving this area the appearance of a brush. The 
two anterior abdominal pairs (PL IX, fig. 5) have something of the 
nature of the true compound pores of Aleurodicus. There is a 
central process which is elongate and somewhat curved. Encircling 
this at the base is a series of spinnerets which are not elevated. The 
outer cup is shallow and outside it on the derm is a circular area of 
papillae-like pores similar to those present in the agglomerate pore. 
This is bounded again by a clear area in which are a few scattered 
simple pores. 
The vasiform orifice (PL IX, fig. 3) is elongate cordate, with 
the anterior edge straight and the latero-caudad margin armed with 
teeth or folds. The caudal end is armed with a prominent projec- 
tion. The operculum is almost rectangular, with rounded edges. 
somewhat broader than long and armed on the latero-caudad border 
with two spines. The lingula is conical, rather elongate, included, 
and armed with four spines. Both operculum and lingula are setose. 
A pair of small seta? is situated just cephalad of the vasiform ori- 
fice, and within the margin of the case all around is a series of fine 
seta?. The margin itself is entire but just within it (PL IX, fig. 
6) are two or three rows of rounded papilhe-like pores. 
The color of the case under the microscope is yellow, shading into 
reddish brown near the margin. On the leaf it appears brown. 
