THYSANOPTERA AND ORTHOPTERA. 213 



wings. It lives typically in exposed places on grass. It is very slug- 

 gish, crawling but slowly and perhaps never flying. 



Taken August 6 and August 13. 



Habitat. Found only on upper and under sides of leaves of tall 

 millet grass, Milium effusum. 



Suborder Tubulifera, 

 Family Phloeothripidae. 



Anthothrips niger (Osborn) . — This is a fairly large thrips, quite 

 black. I have rarely seen it fly, and it crawls but moderately well. 

 It is one of the interstitial species. 



Taken at intervals from July 4 to August 13. 



Habitat. Among florets of white yarrow, Achillea millefolium; among 

 florets of boneset, Eupatorium perfoliatum; in heads of red clover, 

 Trifolium pratense, and of white clover, T. repens. 



Anthothrips verbasci (Osborn). — This is a larger insect than the 

 preceding, and has more spines. It is more readily distinguished in the 

 field by the plant on which it occurs than by any xdsible character, for 

 it was taken only on mullein, and no other thrips that resembles it was 

 ever found on the same species of plant. I am not certain that I have 

 ever observed it in flight. It usually seeks concealed places on the 

 plant, but has been found on exposed surfaces of the leaves. 



Taken July 10 to August 24. 



Habitat. Among buds, flowers and seed-pods, and on stems and 

 leaves of mullein, Verbascu7n thapsus. 



Trichothrips beachi Hinds. — This is a very stout-bodied Phloeo- 

 thripid, of a brown color. Little is yet known of its habits. 



The only specimen collected was taken July 12. 



Habitat. It is not known from what source this one specimen 

 came. It alighted on my hand while I was examining a stem of wild 

 yam, Dioscorea villosa. It did not come from the yam, for I had just 

 completed examining every leaf on both sides, and the stem, and the 

 only thrips on it were some unknown larvae. The surrounding plants 

 from which it might most easily have come w^ere: dogwood, Cornus 

 paniculata; button bush, Cephalanthus occidentalis ; sweet-scented grape, 

 Vitis vulpina; and sw^amp white oak, Quercus bicolor. Hinds (1902, p. 

 193) has taken this species under quince bark. 



Trichothrips brevicruralis 8hull. — The few specimens yet known of 

 this species are all wingless, and are of opaque black color. They are 

 of inactive habits, and live in moderately exposed places. 



Only specimens taken, July 14. 



Habitat. Among leaves of pine-cone gall on willow, Salix fluviatilis. 



