2O ENTOMOLOGICAL NEWS. [Jan., 'l8 



Genus Pogonomyrmex Mayr. 

 P. badius Latr. 



This is the only species of the genus that occurs in the 

 southeastern states. Some of the workers have exceedingly 

 large heads. The workers are dark rufous, very hairy, and 

 have a much rugose head and thorax. 



Genus Atta. Fabr. Subgenus Trachymyrmex Forel. 

 T. septentrionalis McCook. 



The workers of this form have a number of tubercles on 

 the body, which gives them a rough spiny appearance. This 

 species cultivates fungus in its nests for food. The nests are 

 open from the first of April to the latter part of May. After 

 this time the heat becomes too intense for the keeping of fun- 

 gus without the closure of the entrance to the nest. The writ- 

 er has often observed workers carrying apple blossom petals 

 into their nest for the purpose of cultivating fungus from it. 

 Their nest always has the excavated dirt placed a few inches 

 from the opening in such a manner as to form a crescent. 

 This is very characteristic. 



Genus Monomorium Mayr. 

 M. minimum Buckley. 



The small, slender black workers of this species occur in the 

 fields and in houses. In the fi^eld they build crater-shaped 

 mounds. Often they occur in large enough numbers around 

 houses to be considered pests. The writer has found them 

 nesting in rotten wood. 



Genus Aphaenogaster Mayr. 



1. Antennal scape with a shield-shaped enlargement at the base, 



treatac 

 Antennal scape without a shield-shaped enlargement at the base. 2. 



2. Femur and tibiae of legs distinctly enlarged and much darker, 



lamellidens 

 Femur and tibiae not distinctly enlarged and much darkened. . . .3. 



3. Head broad, occipital region with distinct lobes: general color 



dark brown fulra. 



Head slender, occipital region with rounded lobes: general color 

 usually light ferruginous brown with gaster and legs yellow- 

 ish texana. 



Workers smaller: epinotal spines shorter and directed more back- 

 ward; general color brownish; base and tips of gaster paler, 



texana, var. carolensis. 



