PLATE II. 



Figure 7. 

 Schizoneura lanigera. 

 A. — Wax glands. 



B. — Tubercular type of honey-tube which is almost obsolete. 

 C. — Style which is abnormally exserted. Normal in this case when only the 



knob can be seen. 

 D. — Knob which when normal is called subobsolete. 

 E.— Some of the dorsal musculature. 



Figure 8. 

 Wax glands of figure 7, enlarged, showing the arrangement of the cells. 



Figure S. 



Wax gland of a Pemphigina, showing a different number and size of cells than 



ScJiizoneura. 



Figure 10. 



Honey-tube of Macrosiphum. Cylindrical honey-tube which is slightly dilated 



at the distal end. 



A. — Proximal end, or base.* 



B. — Distal end, or tip.* 



C. — Strong imbrication. 



Figure 11. 



Honey- tube of Hhojyalosiphum. An incrassate form. 



Figure 12. 

 Honey-tube of a Melanoxanthus. Vasiform honey-tube of the incrassate type. 



Figure 13. 



Honey-tube of a Drepanosiphum. An incrassate honey-tube which is dilated 



at the base. 



Figure 14. 

 A clavate honey-tube. 

 E. — Weak imbrication. 



Figure 15. 

 Style of a Nectaroiohor ini. An ensiform type. 



A. — Proximal end, or base.! 

 B. — Distal end, or tip.t 

 C. — A setaceous hair. 

 D. — Small spinous processes. 



FuiURE 16. 



Style of an Aphidintw. A conical type. 



Figure 17. 

 Style of a Callipterini. A globular type. 



♦These two points also indicate the places between which the measurement is taken for 

 this text. 



fThese two points also indicate the places between which tlie measurement of length is 

 taken, as given in this text. 



