40 CLASSIFICATION OF THE ALEYRODID^. 



our specimens, for example, the forewings arc slightly shorter than 

 the body, while in lahillei they are longer. The wings are also some- 

 what differentily 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 fonn 

 under the name of lahillei and give the following descriptive re- 

 marks. 



DESCRIPTIVE REMARKS. 



Egg (PI. 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 (PI. 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 (PI. IX, fig. 4). They consist of a clear mar- 

 ginal area and a central area composed of numerous small papilla? 

 or rod-like pores, giving this area the appearance of a brush. The 

 two anterior abdominal pairs (PI. 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 

 papillse-like pores similar to those present in the agglomerate pore. 

 This is bounded again by a clear area in w^hich are a few scattered 

 simple pores. 



The vasiform orifice (PI. 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 setfe 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 (PI. IX, fig. 

 6) are two or three rows of rounded papilla?-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. 



