173 



This is another common insect al^out which very little is known. 

 Its food plants and life history are worthy of study. I have taken 

 this species from Mar. 20 (adult, 1894) to Nov. 4 (adult, 1893) at 

 Bloomington, 111.; at Havana, 111., during August; and at Chicago 

 June 8 (1902). That it probably hibernates in the adult stage is 

 shown by the fact that I captured an adult as early as Mar. 22 at 

 Urbana, 111. This bug, like the sc|uash-bug (Anasa), may have 

 an active migratory period in the fall, and only those individuals 

 survive the winter which happen to be in favorable places when the 

 cold weather sets in. I have captured this bug in the dense Brown- 

 field woods (Urbana), where it was crawling on a log Oct. 12 (No. 

 312, C.C.A.). Hart ('07, p. 237) records it from Asclepias cormiti 

 (■-=A. syriaca) at Havana in the sand area, and also from Teheran, 

 Illinois. 



Oncopcltus fasciatus Dall. Large Milkweed Bug. (PI. XLII, fig. 3.) 

 This large red plant-bug I took but once — on flowers 01 the 

 sw^amp milkweed, Asclepias incarnata (Sta. l,g), Aug. 8 (No. i); 

 T. L. Hankinson, however, captured another specimen (Sta. I) July 

 3 191 1 (No. 7665). 



I have found it in years past abundant on prairie colonies of 

 milkw^eed at Bloomington, 111., from June into September, and at 

 Havana and Chicago during August. On Sept. 26, at Mayview, 111., 

 along the raihvay among prairie plants this plant-bug was found on 

 dogbane (Apocynum). A pale yellow color may replace the red. 



COREIDiE 



Harmostcs rcflexiihis Say. 



This bug w^as found in flow^ers of Asclepias syriaca along the 

 railway track (Sta. I) Aug. 12 (No. 27). 



REDUVnDiE 



Sinca diad cilia Fabr. Rapacious Soldier-bug. (PI. XLI, fig. 4.) 



One specimen of this bug was taken from the flowers of the 

 mountain mint, Pycnanthemum fle.vuosuni, in the prairie grass col- 

 ony (Sta. l,g), Aug. 8 (No. 6). I took it at St. Joseph, 111., in a 

 colony of prairie vegetation along the railwav track Sept. 26, 191 1 

 (No. 495, CCA. ). 



This bug preys upon caterpillars and many other insects. The 

 little we know of its life history has been recorded by Ashmead ('95, 

 Insect Life, Vol. 7, p. 321); its predaceous habits, however, have 

 attracted considerable attention from economic entomologists. For 



