172 



I by T. L. Hankinson, July 3, 191 1 (No. 7665) ; on the Loxa prairie 

 (Sta. II), with insects from flowers of the purple prairie clover, 

 Petalostemum purpureum, Aug. 13 (No. 50) ; and on flowers of the 

 mountain mint Pycnanthemum pilosiim or P. flextiosum (Sta. II), 

 Aug. 13 (No. 52). Consult Forbes ('05, pp. 195, 261) for a sum- 

 mary of its life history, and references to literature. It feeds upon 

 a great variety of plants (Olsen. in Journ. N. Y. Ent. Soc, Vol. 20, 

 p. 53. 1912) and on soft-bodied insects. 



Stirctrus ouchorago Fabr. (PI. XLI, fig. 5.) 



This highly colored bug was taken, Aug. 23 (No. 146), not 

 upon the prairie proper but at the margin of the Bates woods (near 

 Sta. IV, a), where the clearing had been so complete that only 

 sprouts and young trees occurred, associated with many plants which 

 frequent open, sunny places, such as ironweed (Vernonia) and 

 Pycnanthcuium pilosiim. 



This bug sometimes feeds upon the larv?e of the imported as- 

 paragus beetle, Crioceris asparagi (Chittenden, Circ. No. 102, Bur. 

 Ent., U. S. Dept. Agr., p. 6. 1908). This circular contains figures 

 of the nymph and adult. Olsen reports it as feeding upon cater- 

 pillars and beetle larvee and on the plants Asclepias and Rhus (Jour. 

 N. Y. Ent. Soc. \"ol. 20, pp. 55, 56. 1912). 



Thyreocorid.e 



Thyrcocoris puUcariiis Germ. Flea Negro-bug. (PI. XLII, fig. 2.) 



This negro-bug was taken on the flowers of goldenrod, Solidago 

 (near Sta. I, a), Aug. 12 (No. 26). Forbes and Hart ('00, p. 100) 

 state that this insect abounds on Bidens, a plant which grew in great 

 abundance near the goldenrod referred to. Taken (Sta. I) by T. L. 

 Hankinson July 3, 191 1 (No. 7665). 



Lyg^id.5: 

 Ligyrocoris sylvestris Linn. 



This insect was taken while sweeping vegetation in the cone- 

 flower (Lepachys) colony (Sta. 1, e) Aug. 12 (No. 40). 



Lygcrus kalniii Stal. Small Milkweed Bug. (PI. XLII, fig. i.) 



This is one of the commonest insects found upon milkweeds of 

 the prairie. Specimens were taken on the flowers of the swamp 

 milkweed, Asclepias incarnata (Sta. l,g), Aug. 8 (No. i) ; on flow- 

 ers of the mountain mint, PyciiautJicniuuu flexiwsum (Sta. I, g) , 

 Aug. 8 (No. 6); and on swamp milkweeds (Sta. 1, d) Aug. 9 

 (No. 12). 



