ILLUSTRATIONS. 



PLATES. 



Pago. 



Plate I. Figs. 1-12. — Wing venation in tlie Alej'rodid.e 8 



II. Figs. 1-7. — Anatomical details in tlie Aleyrodidie 8 



III. Figs. 1-6. — Diagrams of aleyrodid structures 12 



IV. Figs. 1-14. — Dialciirodicus cockcrcUii 28 



V. Figs. 1-6. — Dialcuroiiicus silvestrii 28 



VI. P"'igs. 1-8. — Dialciirodicus tessellatus 32 



VII. Fig. 1. — Pupoe and waxy secretion of Dialeurodicus cockcrellii 



on leaf. Fig. 2. — I'upre of Dialeurodicus icssellatus on leaf— 32 



VIII. Figs. 1-8. — Dialeurodicus j)ulcherrimus 32 



IX. Figs. 1-14. — Lconardius lahillei 40 



X. Figs. 1-12. — Alcurodicus anonw 44 



XI. Figs. 1-9. — Alcurodicus coccolobcc 44 



XII. Figs. 1-15. — Alcurodicus cocois 52 



XIII. Figs. 1-7. — Alcurodicus destructor 56 



XIY. Fig. 1. — Pup;e of Alcurodicus cocois on leaf, sliowing waxy 

 secretion. Fig. 2. — Pupae of Alcurodicus destructor on leaf, 



showing waxy secretion 56 



XA''. Figs. 1-13. — Alcurodicus dugesii 56 



XVI. Figs. 1-11. — Alcurodicus guppyii 56 



XVII. Fig. 1. — Pup:^ of Alcurodicus dugesii on leaf, sliowing waxy se- 

 cretion. Fig. 2. — Pupae of Alewodicus guppyii on leaf, show- 

 ing waxy secretion 5G 



XVIII. Leaf infested with Aleurodicus guppyii, showing waxy secretion 



of pupae 50 



XIX. Figs. 1-5. — Aleurodicus jamaicensis. Figs. 6-11. — Aleurodicus 



holmcsii 60 



XX. Figs. 1-11. — Alcurodicus ncglectus 60 



XXI. Fig. 1. — Aleurodicus holmcsii: Pupae on leaf, showing waxy se- 

 cretion. Fig. 2. — Alcurodicus ncglectus: Pupae on leaf, show- 

 ing waxy secretion 60 



XXII. Figs. 1-5. — Aleurodicus ornatus. Figs. 6-9. — Aleurodicus pul- 



vinatus 64 



XXIII. Figs. 1-8. — Alcurodicus trinidadcnsis OS 



XXIV. Figs. 1-12. — Alcurodicus (Lecanoidcus) giganteus 68 



XXV. Aleurodicus (Lecanoidcus) giganteus: Leaf, showing waxy se- 

 cretion of pupae and trails of secretion left by adults 68 



XXVI. Figs. 1-5. — Aleurodicus (Lecanoidcus) mirabilis. Figs. 6-11. — 



Alcurodicus (Metaleurodicus) altissimus 72 



XXVII. Figs. 1-10. — Alcurodicus (Metaleurodicus) cardini 72 



XXVIII. Figs. 1-10. — Alcurodicus (Metaleurodicus) minimus 72 



XXIX. Fig. 1. — Alcurodicus (Lecanoidcus) mirabilis: Pupae on leaf, 

 showing wax. Fig. 2. — Aleurodicus (Metaleurodicus) altissi- 

 mus: Pupae on leaf, showing waxy secretion. Fig. 3. — Aleuro- 

 dicus (Metaleurodicus) minimus: Pupae on leaf, showing waxy 



secretion 72 



XXX. Figs. 1-9. — Paralcyrodcs pcrsvw 8-1 



XXXI. Figs. 1-9. — Paralcyrodcs unchii 84 



XXXII. Figs. 1-7. — Aleurocltiton accris 84 



XXXIIl. Figs. 1-10. — Aleurochiton forbesii 90 



XXXIV. Figs. 1-8. — Neomaskellia comata V" 



TEXT FIGURES. 



Fig. 1. Genealogical diagram of the Aleyrodidae 10 



2. Wings of Udamosclis pigmentaria 20 



3. Head of Dialeurodicus cockcrellii 27 



4. Lconardius lahillei; Pupa case, details 36 



5. Lcfmardius lahillei, showing wax rods 37 



6. Aleurodicus cocois: Insects in situ, pupa case, adult, abdomen 4S 



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



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



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



10. Wings of Alcurodicus conspurcatus 55 



11. Aleurodicus phalwnoides: Adult and details 80 



VI 



