27 



Hole in bunch-grass and in blowsand. They have been taken on 

 Ktihnia, and on Cassia one was seen eating a ladybird beetle, 

 CoccincUa p-notata. A very widely distributed species, from the 

 plains to the Atlantic border. Common in many habitats. 



Rediivioliis ferns Linn. April 8. 



Probably our commonest nabid. The species feeds upon small in- 

 sects, usually immature stages. Common in herbaceous growth; it 

 is often found taking shelter under logs. A Devil's Hole specimen 

 was taken on the sand in bunch-grass. The species occurs over prac- 

 tically the entire United States ; it is also widely distributed in Europe. 



Adelphocoris rapidus Say {Calocoris Fieber). October 8. 



Found in bunch-grass sweepings with the following species, 

 which it resembles closely in habits. Very common in black-soil 

 prairie and in cultivated fields, but rare in sand prairie. Widely dis- 

 tributed. 



Lygus pratensis Linn. October 6, 8, April i. 



A very common and widely distributed capsid. These insects are 

 plant feeders exclusively. Taken at the Devil's Hole on Kiihnia and 

 in bunch-grass sweepings. The species is very much less common in 

 sand prairie than in cultivated fields and in black-soil prairie. 



Poecilocapsiis lineatiis Fab. June 20. 



Taken in a cultivated field on plants. Habits similar to those of 

 Adelphocoris and Lygus; the species is not so common, however. 



Phymata fasciata Gray {wollfi Stal). July 23, 29. 



The common "ambush bug"; frequently found in flowers, lying 

 in wait for insect prey, which is seized and held by the powerfully 

 developed front legs. An insect primarily of open places and for- 

 est margins. Taken on Fycnanthemum at the edge of woods near 

 IMatanzas Lake. One specimen from the Devil's Hole, on Cacalia. 

 Rare in sand prairie. This species is of eastern distribution ; other 

 species in the western states are more typical of prairie. 



Picsma cinerea Say. June 24. 



A small tingitid species, quite common and widely distributed ; 

 taken in herbaceous growth along a sandy roadside. 



Lygaeus bicrncis Say {Melanocoryphus Stal). July 29. 



A widely distributed species, occurring on Cacalia atriplicifolia, 

 on which it is very abundant at the Devil's Hole, and throughout the 

 sand prairie. All the Lygaeidac are plant feeders. More common 

 in dry or sandy localities. 



