32 CLASSIFICATION OF THE ALEYRODIDvE. 



DESCRIPTION. 



Pwpa case (PI. VIII, fig. 1).— Shape elongate elliptical, consider- 

 ably narrower cephalad than caiided ; dorsum somewhat rounded, with 

 the abdominal segments distinct, the sutures very plainly marked on 

 the subdorsal area. Vasiform orifice (PL VIII, fig. 2) subcordate, as 

 wide as long, with the anterior margin straight; operculum trans- 

 verse, considerably wider than long, the caudal margin straight but 

 indented at each side, as shown in the figure ; on each side of caudal 

 margin, just at base of this indentation, a small seta is situated. 

 Lingula short, conical, and forming together with the operculum 

 almost a perfect cone. Its tip is armed with two pairs of large setaj 

 and both operculum and lingula are minutely setose. Margin (PI. 

 VIII, fig. 3) entire and just within it all around is a row of simple 

 wax pores. On the subdorsal area are four pairs of wax pores, one 

 pair on each of segments 4 to 7. These pores (PL VIII, fig. 4) have a 

 clear rim and a central dusky area with a dentate margin. Placed 

 irregularly near these are also noticed a number of minute, clear, 

 pore-like areas. 



The case, under the microscope, is transparent, with the exception 

 of a central dark-brown region and four radiating bands of the same 

 color on each side, the position of which are shown in Plate VIII, 

 figure 1. A narrow, colorless, central longitudinal band is present 

 on segments 3 to 8, inclusive. Each of the dark radiating bands has 

 extending through its center a darker line and the marginal pores 

 are closer together on the dark areas than elsewhere. Size of case 

 2.368 mm. by 1.28 mm. 



Adult female.— Read (PL VIII, figs. 6 and 7) with the vertex pro- 

 duced into a cone-like process; frons also produced into a similar 

 process, which extends beyond it ; lower portion of the frons and face 

 armed with numerous spines. Compound eyes dark brown, con- 

 stricted in the middle; ocelli prominent, bordered by a dark red area. 

 The antennae are absent from the specimens at hand. Fore-wing 

 (fig. 4) shaded with brown and mottled with a darker shade of the 

 same color as shown in figure. The extent and intensity of these 

 maculations varies somewhat with the individual; veins brown, the 

 cubitus represented by a transparent "fold;" proximal portion of 

 costal margin armed with stiff hairs and entire margin with small 

 projections on which setae are situated. Size 2.38 mm. by 1.504 mm. 

 Hind wing with brown maculations, as shown in Plate VIII, figure 4; 

 the proximal portion of the costal margin with usually eleven promi- 

 nent bristles. Size 1.92 mm. by 0.704 mm. Paronychium of foot 

 (PL VIII, fig. 8) armed with a prominent bristle. Lingula of vasi- 

 form orifice broad and rounded. Length from vertex to tip of ovi- 

 positor 1.91 mm.; fore-tibia 0.48 mm.; hind tibia 0.8 mm. Color 



