166 ASSOCIATION OF ECONOMIC ENTOMOLOGISTS. 



Prothoracic tubercles: Present, absent. 



Venation 



Wings 



Stigma 



f (Apparent, mm. 

 P^^'^^t^MReal, mm 



Breadth J^PP^^^^t'"^™ 



I jReal, mm 



Total expansion ^^PP^'-^"*' ™"^ 



I Real, mm 



Tubercles 



I Cylindrical, incrassate, clavate, tubercnlate. 

 Extent, base of style, distal end 

 Lengthl^'^PP^^'^"*'"^'^ 

 (Real, mm 



[Glabrous, hirsute 



•^tvle jEnsiform, conical, globular, subglobular, obsolete. 



I Apparent, mm 



N^g^^lReal, mm 



Total length of body I ^PPa^ent, mm . . 1 . . . . 



[Real, mm 



Width of abdomen |Apparent, mm 



[Real, mm 



Mr. Osborn said that he wished to call especial attention to the 

 fact that in this family the nymphs were of nnich value as a means 

 of specific distinction. 



In the absence of their authors the following papers were presented 

 by the secretary. 



THE CURRANT ROOT-APHIS. 



i^cliizoueura fodiens Buckton.) 

 By Fred V. Theobald, M. A. (Cantab.). TF^/p, EngJand. 



During the present autumn (1905) several notices have been sent 

 me regarding the prevalence on the roots of currants of a woolly 

 and mealy aphis. As such root forms are very easily distributed 

 with young nursery stock, a few notes regarding this insect may 

 serve a useful purpose to my fellow -workers in America and our 

 colonies, should it be imported abroad. 



The currant root-aphis, or currant Avoolly aphis, as it is sometimes 

 called here, is undoubtedly the species described by Buckton in his 

 Monograph of British Aphides " as Schizoneura fodiens. This insect 

 is roughly figured on Plate CVI (figs. (> to 12) of that work, but 

 the details are not sufficient to enable certain determination shoidd 

 the insect appear elsewhere, and it is hoped that the additional struc- 

 tural details given here will fill some of the gaps in the original 

 description. 



The appearances on the roots to some extent resemble those of the 

 woolly aphis {Schizoneura lanigera Hausm.), and in consequence 



oVol. Ill, p. 94, 1880. 



