October, '09] JOURNAL OF ECONOMIC ENTOMOLOGY 357 



Schizoneura nleyi Thos {ulmi Riley). This louse was described 

 from the tender growing bark of the elm by Dr. Riley and was seen 

 by Mr. Bragg at Wood's Hole; it is also of common occurrence at Fort 

 Collins and other places in Colorado. I am unable to separate it with 

 any certainty from ulmi, so incline to believe the two forms are one 

 species. 



Galls were taken at Corvallis on TJlmus campestris, or European 

 cork elm, that were very large pocket-like swellings, often involving 

 the entire leaf and with a large wide open mouth below. As the few 

 alate lice taken seem not to be specifically distinct from the specimens 

 we have taken from the common form of this gall on the American 

 elm, I am not considering it a difi'erent species. 



Plate 12. Antennae of Aphididse. All alate viviparous females, except 

 Fig. 5. All enlarged 120 diameters. One and 2 are 6 and 5 jointed antennae from 

 the same individual of Tetraneura ulmicola; 3, Hamamelistes spinosus; 4, 

 from alate form and 5 from apterous stem-mother of Hormaphis hamamelidis ; 

 6, Pemphigus betcc; 7, P. fraxinifoUi; 8, P. acerifolii; 9, P. corrugatans ; 10, 

 P. ulmifusus; 11. P. p-transversus ; 12, P. p-condtipUfolius; 13, P. p-motidlis; 

 14, P. vagabundus ; 15, Schizoneura lanigera; 16, ScMsoneura ulmi. Original, 

 Miriam A. Palmer, delineator. 



