180 



MELOIDiE 



Zonitis bilineata 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. 



Bpicauta z'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, 1911 (No. 7665). 



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



This beetle was 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 integri folium, 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 pennsylvanica 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 terebinthinaceum (Sta. Ilia), Aug. 20 

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

 on flowers of Pycnanthemum pilosum 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, Bryngium 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. L T . S. Ent. Comni, p. 293. 

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

 eggs. 



Rhipiphorid^e 



Rhipiphorus dimidiatus Fabr. 



Five specimens of this mordellid-looking little beetle were taken 

 on flowers of the mountain mint Pycnanthemum flexuosum (Sta. 

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

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

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

 the flowers of P. I ini folium Pursh. 



