X CLASSIFICATION OF THE ALEYRODID^. 



Page. 



XXX. Figs. 1-9. — Paraleyrodes persese 84 



XXXI. Figs. 1-9. — Paraleyrodes urichii 84 



XXXII. Figs. 1-7 .—Aleurochiton aceris 84 



XXXIII. Figs. I-IO.— Aleurochiton forbesii 90 



XXXIV. Figs. 1-8. — NeomaskelUa comata 90 



XXXV. Figs. l-\A.—Dialeurodes citri 98 



XXXVI. Figs. 1-6. — Aleuroplatus querciLs-aquaticae . Figs. 7-12. — Pealius 



maskelli 98 



XXXVII. Figs. 1-6. — Bemisiainconspicua. P'igs. 7-11. — Dialeurodoides aureus . 98 



XXXVIII. Figs. l-Vi.—Aleyrodes spirxoides 98 



XXXIX. Figs. 1-4. — Aleuroparadoxus iridescens. Figs. 5-8. — Aleurocybotus 



graminicolus. Figs. 9-11. — Aleurocanthus spini/erus 102 



XL. Figs. 1-9. — Aleurotulus nephrolepidis 102 



XLI. Figs. 1-6. — Aleurothrixus howardi. Figs. 7-9. — Aleurotrachelus tra- 



cheifer 102 



XLII. Figs. 1-15. — Asterochiton vaporariorum 102 



XLIII. Figs. 1-16. — Aleurotithius timberlakei 106 



XLIV. Figs. 1-17. — Tetraleurodes mori 106 



XLV. Figs. 1-16. — Aleurolobus marlatti 106 



XLVI. Fig. 1. — Dialeurodes citri: Pupa case on leaf. Fig. 2. — Aleuropara- 

 doxus iridescens: Pupa case on leaf. Fig. 3. — Aleurocanthus spini- 

 ferus: Pupa case on leaf. Fig. 4. — Aleurotrachelus trachei/er: Pupa 

 case on leaf. Fig. 5. — Pealius kelloggi: Pupa case on leaf. Fig. 6. — 



Aleyrodes spirseoides: Pupa case on leaf 106 



XLVII. Fig. 1. — Aleurolobus marlatti: Pupa case on leaf. Fig. 2 .—Asterochi- 

 ton abutilonea: Pupa case on leaf. Fig. 3. — Tetraleurodes mori: 

 Pupa case on leaf. Fig. 4. — Aleurothrixus howardi: Pupa case on 



leaf 106 



XLVIII. Aleurotithius timberlakei, showing infestation of underside of leaves of 



Eriodictyon tomentosum 106 



TEXT FIGURES. 



Fig. 1. Genealogical diagram of the Aleyrodidse 19 



2. Wings of Udamoselis pigmentaria 20 



3. Head of Dialeurodicus cockerellii 27 



4. Leonardius lahillei: Pupa case, details 36 



5. Leonardius lahillei, showing wax rods 37 



6. Aleurodicus cocois: Insects in situ, pupa case, adult, abdomen 48 



7. Aleurodicus cocois: Adult male and female, details 49 



8. Aleurodicus cocois: Egg, larvae, and details 50 



9. Aleurodicus cocois: Skin of full-grown larva 51 



10. Wings of Aleurodicus conspurcatus 55 



11. Aleurodicus phalsenoides: Adult and details — 80 



