104 BRITISH APHIDES. 



meme arbre, tandis que cliez nous, bien certainemenfc, 

 non seulemeut pour I'espece actuelle, mais pour toutes 

 celles que je cite, il y a migration, et pas un puceron 

 ne reste sur I'ormeau apres le mois de juillet. Au 

 moinSj je n'ai jamais pu en trouver."* 



ScHizoNEUEA LANUGINOSA, Hartig. PI. CIX, figs. 5 — 10. 



Reaumur, Germar, Ealt., Koch, Pass., Kessler. 



Mimaphidus ulmi, Rondani. 



Apterous viviparous female. 



Inch. Millimetres. 



Size of body 0-050 X 0-025 1-27 X 0-63. 



Length of antennae 0*020 0'51. 



Form long-oval. Colour black, smooth, clothed 

 with cottony filaments. Eyes very small. AntenntB 

 short, and often showing but four articulations. Ros- 

 trum black, reaching to the second coxte. Legs short. 



Winged viviparous female. 



Inch. Millimetres. 



Expanse of wing 0-230 5-84. 



Size of body O'OSSX 0-020 1-39 X 0-51. 



Length of antennjs 0*020 0-51. 



Black. Antennie strongly ringed and very short, 

 six-jointed. Abdomen at the apex furnished with 

 white filaments. Rostrum short, cornicles mere pores. 

 Wings hyaline. Stigmata large, blackish green. Veins 

 black and very slender. 



This ScJiizoneura forms gall-like masses at the ends 

 of the twigs of JJlmiis camipestris and U. suherosa. 

 They are densely hairy, and vary in size from a small 



* ' Extrait de la Feuille cles Jeunes Naturalistes/ Aout et Septembre, 

 1879. 



