196 THE ENTOMOLOGIST. 



Chrysomela exclamatiunis, Fabr. 



This is extremely abundant in all stages on the red sunflowers 

 at Boulder, and is a great pest. The larvss void their excrement 

 when touched, and are probably avoided by birds. The beetles 

 are, however, attacked by the Hemipteron Perilloides claudus, 

 Say, which resembles them to a certain extent in its colour- 

 scheme. Fabricius published C. exclamationis in 1801, stating 

 that it was obtained by D. Smith Barton in North America. 

 This was evidently Benjamin Smith Barton of Philadelphia; 

 how he obtained this western insect in 1801 I do not know, but 

 the description of Fabricius seems clearly applicable. Mr. F. 

 Knab has very kindly copied out for me all the localities for 

 C. exclamationis in the U.S. National Museum, the Hubbard and 

 Schwarz collection, and the Knab collection. The most eastern 

 localities are in South Dakota (Aberdeen, E. A. Vickery ; Volga, 

 Truman) ; Kansas (Riley Co., Popenoe ; Topeka, Hubbard and 

 Schwarz ; Onaga, F. F. Crevecceur) ; Nebraska (Lincoln, H. 

 Soltau ; West Point) ; and Texas (Dallas, Boll). One specimen 

 is labelled " Pennsylvania," from the collection of C. V. Riley, 

 but, as Mr. Knab says, this is surely a mistake. 



One specimen is said to come from Arizona (from collection 

 of J. B. Smith), but there are none from the Pacific coast region, 

 where I incline to believe that Helianthus lenticidaris is not truly 

 indigenous. 



There are in addition some very characteristic sunflower 

 weevils (especially Desmoris constrictus, Say, and D. falvus, 

 Lee), but my materials have not yet been fully examined. 



Hbmiptera. 



Aphis helianthi, Monell, occurred in quantity on leaves of the 

 red sunflower in my garden at Boulder ; but I also obtained a 

 species of Macrosiphuni, a new genus for Helianthus. Specimens 

 of this were kindly examined by Professor C. P. Gillette, who 

 reported that he could not distinguish them from M. ambrosia, 

 Thomas. 



The predatory bug Phymata fasciata, Gray, was found at 

 Boulder on the red sunflower, preying on the honey bee, Apis 

 mellifera ligustica, Spin. 



Thysanoptera. 



A thrips abundant on heads of the red sunflower at Boulder 

 was carefully examined by Miss Elizabeth Robinson and the 

 writer. We could not distinguish it in any way from the 

 common Frankliniella tritici, Fitch. 



