66 CLASSIFICATION OF THE ALEYRODID-E. 



below the apex. On the upper half of the wing (i. e. above the central nervure) 

 the bands are nearly straight and about equidistant, but they mostly enlarge 

 about the middle of the wing, the third and fourth being joined by the inward 

 prolongation of the longitudinal band. The third band is interrupted below its 

 middle, and its lower part is joined to the second band, of which it appears an 

 oblique branch. The true prolongation of the second band bends obliquely in- 

 wards, and is joined at one point to the first band. The second band is also 

 joined to the first by a thin process in" the region of the central nervure. For 

 the rest, the insect is white, with the abdomen slightly yellowish. The larva 

 is grey, with white secretion. The antenuie, legs, venation, glands of larva, 

 etc.. seem to be practically as in A. anon<B, and need not, therefore, be described. 



DESCRIPTIVE REMARKS. 



Pupa case. — Elliptical, about 1 mm. long by 0.84 mm. wide. Color 

 under microscope yellow, darker centrally. Margin of case lightly 

 crenulate. Dorsum little elevated, segments distinct (PI. XXII, 

 fig. 1). Just within margin of case all around is a series of wax 

 pores, resembling somewhat in structure the compound wax pore, and 

 secreting long slender wax rods (PI. XXII, fig. 4), On caudal mar- 

 gin of case are two pairs of spines, and just within margin all around 

 is a series of spines, the exact number of which can not be deter- 

 mined on account of the imperfect condition of the single pupa case 

 in the type material. There are four pairs of the usual compound 

 wax pores on abdomen and a pair on cephalic end of case (PI. XXII, 

 fig. 3). 



Vasiform orifice broader than long, subcordate; operculum short, 

 twice as broad as long. Lingula protruded and very long (0.15 mm. 

 from base to tip), spatulate, with two pairs of strong spines at caudal 

 end. The unusually large lingula resembles that of dugesii, though 

 it is not dark in color as in that species (PL XXII, fig. 2) . 



Adult female. — Length of forewing about 2 mm.; width about 1 

 mm. Body reddish brown. Eyes reniform, plumbeous. Length of 

 fore tibia 0.46 mm. Length of fore tarsus 0.27 mm., the segments 

 subequal in length. Wings banded with dusky, as shown in Plate 

 XXII, figure 5, and about as described by Prof. Cockerell. 



Aleurodicus pulvinatus (Maskell). 



(PI. XXII. figs. 6-9.) 



Aleurodes pulvinata Maskell, • Trans. New Zealand Inst., vol. 28, p. 439 

 (1895). 

 In the Maskell collection of Aleyrodidce loaned to the Bureau of 

 Entomology by the New Zealand Institute are two examples of the 

 pupa case of this species, in balsam slide mounts. This insect has in 

 general the type of case of cocois, but presents distinctive differences. 

 While originally described as an Aleyrodes by Maskell, its resem- 

 blance in structure to Aleurodicus was recognized by the describer, 



