70 H. W. Peal — Monograph of the Oriental Aleurodulse. [No. 3, 



Vasiform orifice long, in the shape of a narrow cone ; apex pointing 

 caudad. Cephalic margin flat, corners rounded. Connecting the vasi- 

 form orifice to the incurved area on caudal margin is a narrow groove 

 or channel. This channel and the sides of the vasiform orifice are 

 bounded by two yellow, rounded fleshy ridges which run from the upper 

 corners of vasiform orifice caudad to margin. On the end of these 

 ridges are the two tubercles from which the caudal setae spring. Edge 

 of vasiform orifice light brown. Operculum similar to that in previous 

 stages but lateral margins flatter ; but little more than |rd. length of 

 vasiform orifice. Colour light-brown, caudal margin darkest ; surface 

 covered with fine hairs. There are near the tip two fairly long hairs 

 which project caudad. 



Parasited pupae become very convex, dark coloured and in some cases 

 turn quite black. 



Adult female. Length - 8 mm. Wing '85 mm. x *31 mm. 



Colour light-yellow ; dorsal surface of thorax tinged with brown. 

 Legs light-yellow ; eyes maroon, almost divided, lower half larger. 

 Wing immaculate powdered with white meal. Length of antennae '22 

 mm. Formula 3, 2, 7, 5, 6, 1, 4. Joint 1 short, broad for its length ; joint 

 2 subpyriform, nearly twice the length of joint 1 ; joint 3 twice the length 

 of joint 2 ; joint 4 one-fourth length of joint 3 ; joint 5 one-and-a-half 

 times the length of joint 4 ; joint 6 slightly shorter than joint 5 ; joint 

 7 nearly one-and-a-half times the length of joint 6. Vasiform orifice 

 cordate, anterior edge flat. Rim of vasiform orifice tinged with yellow. 

 Operculum in the form of a narrow neck which broadens out into a 

 wide bilobed tip. The posterior margin incurved. Operculum faintly 

 tinged with yellow. Lingula long, fairly stout, conical at tip; setose, 

 the end extends almost to the inferior edge of the vasiform orifice ; 

 colour yellow. 



Adult male. Length '72 mm. Wing -74 mm. x *25 mm. An- 

 tennae '2 mm. Formula of antennas, shape of vasiform orifice, etc., as 

 in female. 



Aleurodes bengalensis n. sp. Plate II, Figs. 10-16. 



Egg. '2 mm. x "1 mm. 



Colour reddish-brown under the microscope, dark claret colour 

 under a hand lens. Surface covered with meal. The eggs are usually 

 laid in a more or less perfect ring. 



For want of material the first, second, and third larval stages have 

 been described from empty skins and in some cases dead and dried 

 individuals. I will describe them later on in detail when these stages 

 can be obtained. Just now, Nov. 20th, pupae and adults are fairly plenti- 

 ful and larvae 4th stage scarce, no living examples of any of the other 



