180 



Meloid^ 



Zonitis bilincata Say. Two-lined Blister-beetle. (PI. XLIV, fig. i.) 



This beetle was taken on the apical leaves of the common milk- 

 weed, Asclepias syriaca (Sta. I), Aug. 12 (No. 33). Blatchley 

 ('10, p. 1356) records it as from the flowers of the wild rose. 



Epicaiita Ji'ittata Fabr. Old-fashioned Potato Beetle or Striped 

 Blister-beetle. (PI. XLV, fig. 5.) 



Several specimens were taken by T. L. Hankinson at Station I 

 July 3, 191 1 (No. 7665). 



Bpicauta marginata Lee. Margined Blister-beetle. (PI. XLV, fig. 2.) 



This beetle w^as taken at Station I by T. L. Hankinson only — July 

 3, 191 1 (No. 7665) ; it was taken also from the leaves of the rosin- 

 weed, Silphium. integrifoliuui, on the Loxa prairie (Sta. II) Aug. 13 

 (No. 48) ; from an open ravine in Bates woods (Sta. IV, b) Aug. 22 

 (No. 124) ; and in the lowland glade (Sta. IV, c) Aug. 22 (No. 143). 

 For accounts of the common Illinois species of blister-beetles see 

 Forbes and Hart ('00, pp. 487-490, and Forbes, '05, pp. 111-114). 



Bpicauta pcnusylvanica DeG. Black Blister-beetle. 



This beetle was collected from flowers of goldenrod, Solidago 

 Sta. I, a), Aug. 12 (No. 26) ; on the Loxa prairie (Sta. II) from 

 flowers of the rosin-weed, Silphium integri folium, Aug. 13 (No. 

 48) ; on flowers of Silphium tcrcbinthiuacenm (Sta. Ilia), Aug. 20 

 (No. 119) ; in the cleared margin of Bates woods (near Sta. IV, a), 

 on flowers of Pyctmnthemimi pilosiim Aug. 23 (No. 146) ; again on 

 goldenrod, Solidago (near Sta. I, a), Aug. 24 (No. 152) ; and from 

 the Loxa prairie on flowers of rattlesnake-master, Eryngium yucci- 

 folium, (Sta. II, a) Aug. 27 (No. 178). 



The larvse of this and some other species of blister-beetles prey 

 upon locusts' eggs. (Cf. Riley, First Rep. U. S. Ent. Comm., p. 293. 

 1878.) The beetle lays its own eggs in the vicinity of the locusts' 

 eggs. 



Rhipiphorid^ 



Rliipiphorus dimidiatus Fabr. 



Five specimens of this mordellid-looking little beetle were taken 

 on flowers of the mountain mint Pycnanthcmum flexuosum (Sta. 

 I, ^) Aug. 8 (No. 6) ; and three specimens on flowers of the moun- 

 tain mints P. flexuosum and P. pilosuni on the Loxa prairie (Sta. 

 II) Aug. 13 (No. 52). Blatchley ('10, p. 1366) reports it as from 

 the flowers of P. lini folium Pursh. 



