PLATE CVI. 



SoHizoNEURA LANiGERA — continued. (Page 89.) 



Fig. 1. — Rostrated apterous male. 



Fig. 2. — Non-rostrated oviparous female. Tliese 

 two figures are of relative size to tlie winged female 

 whicli bore them (see fig. 5 on last plate). 



Fig. 3. — Head, antennge, and aborted mouth-parts of 

 the oviparous female. No trace of a sucking organ can 

 be seen. The antennee also are degraded in form. 



Fig. 4. — Young (male ?) born also from fig. 5. 

 The rostrum would seem to disappear at the subse- 

 quent moult. This sex therefore is finally blind as 

 well as mouthless. 



Fig. 5. — Sprig of apple bough, tufted with the 

 " American blight," drawn of natural size. 



SoHizoNEURA FODIENS. (Page 94.) 



Fig. 6. — Apterous viviparous female. 



Fig. 7. — Pupa from the same. Both of these are 

 subterranean forms. 



Fig. 8. — Imago with her folded wings, drawn shortly 

 after she has left the colony below ground. 



Fig. 9. — Young just born from the winged female. 

 The legs are hardly yet disengaged. 



Fig. 10. — Upper and lower wings of imago. 



Fig. 11. — Portion of the root of Ribes (black cur- 

 rant) infested by this Aphis. Nat. size. 



Fio;. 12. — Antenna of the same. 



