96 BEITISH- APHIDES. 



what vermiform young, fifteen minutes after birth, 

 produced from the winged mother. In all probability 

 these are the sexed forms. Many centipedes affect 

 these nests ; they do not appear to molest the 

 Aphides in any way. 



Sell, venusta, Pass., has not yet been taken in this 

 country. It feeds on the roots of Bromus. 



SCHIZONEURA FULIGINOSA, Buchtoil, PI. CVII. 



A])terous viviparous female. 



Incli. Millimetres. 



Size of body 0'090x0-040 2-27xl-01. 



Length of antennee 0'035 1*88. 



„ cornicles mere warts „ 



Sooty black, rather shining. Abdomen carinated 

 and ringed. Eyes black. Antennae sooty grey. 

 Whole insect hirsute, and slightly powdered with a 

 mealy substance. Rostrum reaches to the third coxge. 



Fill) a. 



Wholly black, dull, and covered with a grey, curly, 

 and woolly coat. Wing-cases greyish-black. Body 

 somewhat fusiform. 



Winged viviparous female. 



Wholly black, very hairy, slightly mealy. Antennse 

 with the third joint simple, that is, not ringed. 

 Wings moderately long. Cubitus and nervures pale 

 brown. Stigma long, stigmatic vein nearly straight. 

 Post-costal nervure (hind wing) straight, with the two 

 oblique veins also straight, divaricating from the same 



