68 PROCEEDINGS ENTOMOLOGICAL SOCIETY 



ably under logs in the river bottoms. On February 26 ten 

 ants were found in a bunch with a single pupa (Mitchell). 

 Specimens have also been taken November 19 (F. C. Pratt). 



Odontomachus clarus Roger. 



This species was taken in an adjoining county on June 19, 

 1907, on Anthem is arvensis (Mitchell). The species has been 

 found resting in the ground. 



Ectatomma tuberculatum Olivier. 



This ant was colonized in Victoria County from Guatemala 

 in the years 1904, 1905, 1906. The colonies were of rather 

 small size. Their foraging habits were very closely watched. 

 They are very fond of honeydew and nectar, but also require 

 insect food. The short-sightedness and feeble sensory powers 

 render an abundance of insect food necessary to furnish the 

 wants of the colony for solid food. At Victoria in July they 

 were most active about 8 o'clock in the morning and from 

 3 to 7 in the afternoon. It was noticed that while consider- 

 able food was stored in food chambers, the small native ants 

 generally made away with most of it. The distance foraged 

 was seldom over 10 feet. The ants were observed to kill 

 boll weevils (Anthonomns grand is), caterpillars, and other 

 ants. Whenever individuals of Pogoriomyrmex barbatus 

 encountered one of the strangers there was a struggle and the 

 native ant lay dead, but in the end the cooperation of Po- 

 gonomyrmex prevailed over the individual prowess of Ecta- 

 toituiia, which seems to have no instinct prompting mutual 

 help. All attempts to establish this species firmly appear to 

 have ended disastrously (Pierce). 



DORYLID.E. 

 Eciton coecum Latreille. 



This species was found nesting March 4, 1910, in alluvial 

 soil. The workers were of three sizes. Males have been 

 taken many times at lights of houses and camp fires in this 

 and surrounding counties (Mitchell). 



Eciton (Acamatus) opacithorax Emery. 



A large aggressive colony was taken under a dead log, 

 April 14, 1909 (Mitchell). 



Eciton (Acamatus) harrisi Haldeman. 



This species was collected at Victoria, Texas, September 

 18, 1904. 



