24 ENTOMOLOGICAL NEWS. [Jan., 'iS 



Genus Dorymyrmex Mayr. 



1. Color dark brown 2. 



Color not as above, light yellowish 3. 



2. Head and thorax reddish brown, abdomen darker, 



pyramicus Roger 

 General color much darker, almost black, 



pyramicus Roger, var. niger. 



3. Head and thorax reddish yellow; abdomen lighter with darkened 



tip . . pyramicus Roger, var. flavus Pergande. 



D. pyramicus Roger. 



This dark brown species builds crater-shaped nests in sun- 

 ny spots. It is one of the most numerous ants in the State and 

 is common throughout the southern states. The workers feed 

 on other insects, but are also fond of aphid excretions. 



D. pyramicus Roger, var. niger Pergande. 



This is a much darker form than the above and has not been 

 collected by the writer in the northern part of the State, al- 

 though it is common in the warmer southern part. 



D. pyramicus Roger, var. flavus Pergande. 



This species is light in color, being reddish yellow with a 

 lighter abdomen. It is also very common throughout the State. 

 The habits of this variety and of D. pyramicus are the same. 



Genus Iridomyrmex Mayr. 



i. Color uniform brown; workers when crushed not odorous; im- 

 ported species found generally in seaport towns, humilis Mayr. 

 Color of head and thorax brown, abdomen lighter; workers when 

 crushed give off a perceptible Tapinoma odor ....an-alis Andre 



I. humilis Mayr. 



This species has been imported into the United States from 

 Argentina. It occurs principally in seaport towns. In South 

 Carolina this species has not been found in any other towns 

 than Charleston and Summerville. As a species of econom- 

 ic importance this ant is second to none. The Bureau of 

 Entomology, United States Department of Agriculture, has a 

 large bulletin on the distribution, life history, control measures 

 and other important point? of interest concerning this ant. 



I. analis Andre. 



The workers of this ant build their nests principally under 

 stones. The ants have a characteristic odor. The workers are 



