SCHIZONEUEA LANIGEEA. 89 



than the preceding, and ending witli a rudimentary 

 joint ; a small tubercle sometimes separating the two 

 parts. 



Cornicles rudimentary or none. 



Legs short. Tarsi furnished with two claws. 



Body either powdered with a mealy substance or 

 furnished with w^ool-like tufts. 



Wings moderately long. Cubital vein with a single 

 furcation, and in most species springing at some con- 

 siderable distance clear from the cubitus. The post- 

 costal nervures of the hind wings nearly straight, and 

 giving rise to the usual two oblique veins. 



Some of the species of this genus are subterranean 

 as v/ell as aerial in their habits. Some are denizens of 

 gall-like structures, the commencements of which are 

 made by the insects which hatch from the ova laid the 

 previous season. These females are wonderfully 

 prolific, and become the stock-mothers or founders of 

 the new colonies. 



ScHizoNEUEA LANIGEEA, Eausman. Plates CY and CYI, 



figs. 1 — 5. 



Aphis lanigera, Haus., Germar., Kirby, and Spence. 

 Eriosoma mail, Leach, Mosley, Haliday. 



„ lanigera, Fitch. 

 Myzoxylus mali. Blot., Tougard, Amyot. 

 Schizoneura lanigera, Hartig, Kalt., Pass. 

 " The American blight." 



Apterous viviparous female. (Queen Aphis.)* 



Incli. Millimetres. 



Size of body 0-070 X 0-055 177 X 1-39. 



Lena:th of antennse 0*015 O'SS. 



Cornicles rudimentary. 



* No very satisfactory Englisli name Las been proposed for tlie imme- 

 diate produce of the egg of Aphis. As before stated, the hatched insect 

 is always a so-called female (Lichtenstein's Pseudocjyne), and she is 

 the founder of the whole series of generations, ending in the perfected 



