Determinations and Records of Insects. 311 



Pachypsylla seltidis-mamrna Riley. September; September, at night, 

 taken at trap light; October, twilight; and November. 



Family APHiDiDiE. 



Phylloxera devastatrix Perg. May, from galls on pecan tree, which was 

 severely infested. (Det. by C. E. Sanborn.) 



Pemphigus popiditransversus Riley. November 3, in leaf galls of cotton- 

 wood (Populus deltoides Marsh.). (Det. by C. E. Sanborn.) 



To.roptera grainhwyn Rond. May and June, apterous females in oats 

 fields, disappearing shortly before harvest, but stock was bred 

 in confinement on oats and wheat seedlings from first week of 

 May to end of December. 



Sipha n. sp., fide Sanborn. November 2, collected with Siphocoryne 

 averue Fab., on wheat. (Mr. C. E. Sanborn has written about it 

 as follows: "The new species of Sipha is one I have been pon- 

 dering over for quite awhile. I first took this in Kansas in early 

 spring. Its food habits are very peculiar, and in addition to 

 wheat has oats and a few grasses like crabgrass. On some of 

 them it has a subterranean habit. S. viaydis of Passerini, 

 pages 64 and 65 in 'Aphididse Italicse, 1863, is a closely related 

 form, but is evidently distinct. The present form has nearly 

 all the characteristics of Siphocoryne avense except in the an- 

 tennae. I have the illustrations and descriptions of it, which I 

 think I will soon publish.") 



Aphis maidis Fitch. June and July, extensively infesting corn. (Det. 

 verified by C. E. Sanborn.) 

 setariie Thos. May, on foliage of cultivated plum; September, on 

 goose grass (Eleusine indica) , hurrah grass {Panicum texana), 

 finger grass, and two other kinds of grasses undetermined. 

 (Det. by C. E. Sanborn.) 



Siphocoryne avcme Fab. May, apterous colonies on oats; June, winged 

 forms in oats fields, occurring nearly to time of harvesting. 

 First migrant in fall was found October 15, on oat plant in 

 field; specimens found scatteringly in another field on the 23d, 

 including one female with newly born young; still scarce in 

 same field on the 31st; occurring rather commonly in wheat 

 field on November 2 ; migrants and mature apterous forms, 

 both with young, observed a few days later in other fields, 

 wheat being apparently preferred to oats; winged and apterous 

 forms found on the 24th, on oats seedlings experimentally 

 grown remote from fields, but no specimens whatever in field 

 inspected on the 25th; last example taken on experimentally 

 grown oats seedlings, December 3. (Dets. by C. E. Sanborn.) 



Rhopalosiphnm serotinx Oestl. May, dug from ground in cornfield near 

 weedy corner. (Det. by C. E. Sanborn.) 



Macrosiphum rudbeckise Fitch. August, on golden-rod (Solidayo caiia- 

 densis). (Det. by C. E. Sanborn.) 



Myzus braggii Gil. May, on thistle (Carduics sp.) . Det. by C. E. San- 

 born.) 



