28 



Lygacus kahiiii Stal. July 12, April 4, 5. 



Found quite commonly on Apocynum with Chrysochiis auratus, 

 in an abandoned field at the Devil's Hole. Taken in spring under a 

 cactus lobe in bunch-grass, and under a log at the edge of a culti- 

 vated field. One of the commonest members of its family, ranging 

 from the plains and the southwestern states to the Atlantic coast. 

 It is commonest in the eastern states. 



Oncopeltiis fasciatus Dallas. July 23. 



Taken on Asclcpias syriaca at iVlatanzas Lake, and alsO' in her- 

 baceous growth on the forested marginal dune south of Havana. 

 Ranges from the southwest to the Atlantic states, and is almost al- 

 ways associated with the milkweed. 



Ligy roc oris diifusus Uhler (sylvestris Stal). October 8. 



One specimen, swept from bunch-grass. A widely distributed 

 species, usually found in grassy situations. Not characteristic of 

 sand. 



Geocoris biillatns Say. April i, 7, 9. 



Species of Geocoris are often found crawding about on sand in 

 sparse vegetation. Taken in bunch-grass at the Devil's Hole, and 

 in blowsand at the Devil's Neck. Common along the Atlantic coast, 

 and found as far west as Colorado. A typical species of sand. 



Microtonia atrata Goeze. April 5. 



This black lygaeid is the single representative of its genus, and 

 is of wide distribution. One specimen, taken under a board at the 

 edge of a field. 



Corizus sp. (undetermined). April i. 



Taken under a log at border of cultivated field. The Coreidae 

 eat both animal and vegetable matter, particular species doubtless 

 inclining in one of the two directions. This species is probably pre- 

 daceous in large part. 



Alydus sp. (undetermined). July 5. 



Coreids of this genus have while immature a remarkable superfi- 

 cial resemblance to ants. The specimens taken were all immature. 

 They were found in the Cassia belt of blowsand and in a small blow- 

 out, and in bunch-grass. Hart records three species of Alydus: pi- 

 losuliis H.-Schf., conspcrsus Mont., and curinus Say. The genus is 

 found usually on dry or sandy ground, in sparse vegetation, and ranges 

 from the plains to the Atlantic region. A. pluto and A. setosiis are 

 confined to the western states. Probably a predaceous species. 



