88 H. W. Peal — Monograph of the Oriental Aleurodidde. [No. 3, 



marks along the centre of dorsum : dorsum covered with coarse granula- 

 tions. Segments of body more or less distinct along dorsum. Margin 

 of case broad, crenulated ; there is no wax fringe. Dorsum flattish, 

 sometimes slightly convex. Vasiform orifice conical, very much elonga- 

 ted, anterior edge concave, sides emarginate. Abdomen distinctly 

 cleft from the vasiform orifice to the posterior margin, the edge of which 

 is slightly incurved to meet the cleft ; the vasiform orifice is over one- 

 half the length of the cleft. Operculum attached anteriorly to vasiform 

 orifice, sub-elliptical, broader than long, Lingula narrow, broadest at tip, 

 narrowest a little above the middle. Tip conical, projecting beyond 

 operculum about one-and-a-half times the length of the operculum. 

 It is slightly shorter than the vasiform orifice within which it 

 lies. 



Larva. Last stage. Size 11 mm. x *76 mm. 



Shape elliptical. Dorsum almost transparent. Segments more or 

 less distinct along dorsum. Insect itself more or less distinct beneath 

 the dorsum. Colour of maturing insect orange to yellow, eyes maroon. 

 Margin of dorsum broad and transparent, the rest of the body faint 

 greenish-yellow. Vasiform orifice lemon-yellow the operculum slightly 

 darker in shade. Lingula similar in colour. Vasiform orifice opercu- 

 lum and lingula as in preceding stage. No trace of setae or hairs, 

 either on dorsum or on margin of body. Margin extremely flat, the 

 dorsum rises with a slight curve from margin. 



Puparium. Size 115 mm. x *84. mm. 



Colour translucent, faintly tinged with yellow. Insect itself clear- 

 ly discernable beneath the dorsum; colour yellow, eyes dark red. The 

 rest as in larval stages. 



Adult female. Length *85 mm. Wing 1'05 mm. x '35 mm. 



Colour of body brownish-yellow ; legs and antennae yellow. Length 

 of antennae '22 mm., seven jointed : joint one short, subpyriform : joint 

 two stout, slightly longer than joint one : joint three two and a half 

 times length of joint two : joint four short, less than one-third joint 

 three in length : joints five and six equal, slightly shorter than joint 

 two: joint seven long and tapering, half the length of joint three. Wings 

 immaculate. Eyes reniform, undivided. 



I have been unable to obtain specimens of the adult male. 



I have much pleasure in naming this species after Mr. H. M. 

 Leake, who assisted me in collecting specimens and was kind enough to 

 mount examples for the microscope. 



Aleurodes hoyss n. sp. Plate V, Figs. 1-3. 



This species is fairly common in and around Calcutta on Hoya sp. 

 I have observed it in the years 1900, 1901, and 1902. Although it is 



