332 Habits of the Greenhouse White Flij 



BIBLIOGRAPHY. 



1. Westwood. 185(5. Gardeners' Chronicle. 



2. SiGNORET. 1868. Essai inonographique sur le-s Aleurodides. 



3. Rtley. 1880. Aleyrodes on Oxalis. Am. Ent. \'o\. lu. 



•i. WoODWORTH. Resp. system of Al. citri. Zool. Jahres. 1902. 



5. Peal. 1903. The function of the vasiform orifice of the Aleurodidae. Jour. 



Asiatic Society of Bengal, vol. Lxxii, part 2. 



6. Miss Bernis. 1904. Proc. U.S. Nat. Mus. vol. XLVii. p. 475. 



7. TuLLGREN. 1907. Arkiv.fur Zool. Bd. 3, No. 26. 



8. Morrill and Back. 1911. White flies injurious to htrus in Florida. 



Bull. 92, Bur. Ent. U.S. Dept. Agr. 



9. QuAiNTANCE. 1913. Classification of Alei/rodidiie. 



EXPLANATION OF FIGURES. 



All figures are drawn at stage level with tube length of 150 mm. Lcitz oculars and 

 objectives throughout. 

 Figs. 10, 15, 17, 18, 22, 46, 49, Oc. 1, Ob. i. 

 Figs. 1, 3, 29, 38, Oc. 3, Ob. i 



Figs. 5, 6, 7, 16, 21, 25, 30, 32, 34, 36, 37, 42, 45, 47, 48, 51, 55, 56, Oc. 3, Ob. i 

 Figs. 4, 8, 11, 12, 13, 14, 19, 20, 23, 24, 31, 43, 44, 50, 54, Oc. 3, Ob. ,V (oil imm.). 



The following are reduced : 

 Figs. 12, 15, 17, 25, 31, 32, 35, 37, 38, 42, 44, Hi, 48, 50 to |. 

 Figs. 4, 5, 6, 8, 22, 45, 47, 49 to J. 

 Fig. 1. Egg. 



Fig. 2. Circle of eggs. Note surrounding meal. 

 Fig. 3. Egg showing crack for emergence of larva. 

 Fig. 4. Section of egg in situ on the leaf. 

 Fig. 5. Ventral view of living first mstar. Note the broad fringe of wax, cerci, legs. 



anteimae, eyes, stylets, mycetoma, segmentation. 

 Fig. 6. Ventral view of stained preparation to show spiracles, mouth-parts, eyes, marginal 



and other spines. 

 Fig. 7. Lateral view of posterior end of abdomen to show the length of the cerci. 

 Fig. 8. Larval stylets in the leaf tissues. 

 Fig. 9. Cycle of movements of stylets. 



Fig. 10. Dorsal view showing tracheal system. Note dorsal and ventral parts. 

 Fig. 11. Leg of first instar from the outer side. Note the basal spine on the inner side. 

 Fig. 12. Antenna. 



Fig. 13. Dorsal view of vasiform orifice. 

 Fig. 14. Lateral view of posterior end of abdomen of first instar showing vasiform 



orifice. Note the anus opening between the lingula and operculum, and marginal 



spines. 

 Fig. 15. Dorsal view living second instar. Note wax fringe, cerci, antl i)air of posterior 



marginal spines. 

 Fig. 16. Mouth-parts of second instar. Note peculiar folded rostrum, short length of 



protruding stylets, dilated pharynx with the dilator nmscles and then direction of 



action (indicated by arrows). 



