140 THE MEXICAN COTTON-BOLL WEEVIL. 



weevil, being very industrious in its search for infested squares, which 

 it enters in great numbers. 



Solenopsis molesta Say (PL' XVI, e). — This minute ant was taken 

 in the act of attacking a boll-weevil larva at McAlester, Okla., by Mr. 

 R. A. Cushman. 



Solenopsis texana Emery. — This ant is a common enemy of the 

 immature stages of the boll weevil in Texas, Louisiana, and Missis- 

 sippi. 



Monomorium minimum Buckley. — The common house ant is a 

 very valuable enemy of the boll weevil in Texas, Louisiana, and Mis- 

 sissippi. 



Monomorium, pharaonis Linnaeus (PL XVI, d). — This cosmopolitan 

 house ant is another of the more important boll-weevil enemies in 

 Texas, Louisiana, and Arkansas. 



Pheidole sp. near Jlavens. — This species was found abundantly 

 attacking the immature stages of the boll weevil at Arlington, Tex., 

 August 31, 1908, by Mr. R. A. Cushman. 



Pheidole crassieornis Emery. — This species was found as an abun- 

 dant enemy of the immature stages of the weevil at Lampasas, Tex., 

 September 23, 1908, by Mr. R. A. Cushman. 



DOLICHODERID.E. 



Forelius maccooki Forel. — This ant has been recorded at several 

 places in Texas as an enemy of the immature stages of the boll weevil. 



Dorymyrmex pyramicus Roger (PL XVI, c). — The so-called lion ant 

 of Cuba was recorded by Mr. E. A. Schwarz (1905) as protecting 

 solitary tree cotton from the boll weevil. 



Dorymyrmex pyramicus Roger, var. jlavus Pergande. — This com- 

 mon cotton-field ant has only once been recorded definitely as an 

 enemy of the boll weevil. This record is from Texarkana, Tex., by 

 Mr. R. C. Howell. 



Iridomyrmex analis Ern. Andre. (PL XVI, /). — This common ant is 

 normally a honey-loving species, but occasionally attacks insect food. 

 It has been found attacking the boll weevil by Dr. W. E. Hinds. 



Iridomyrmex humilis Mayr. — The Argentine ant has formerly been 

 recorded as an enemy of Solenopsis geminata, Monomorium pharaonis, 

 and Iridomyrmex analis, three of our common boll-weevil enemies. 

 Mr. T. C. Barber has recently reported that the Argentine ant, by 

 continually worrying the boll weevils and killing newly emerged 

 adults, practically cleared a heavily infested cotton patch at Baton 

 Rouge, La., in September, 1909, at a time when fields outside of the 

 ant territory were still very seriously infested. 



FORMICID.E. 



Formica subpolita Mayr, var. perpilosa Wheeler.— This species is 

 normally a honey feeder, but has been recorded by Rangel (1901) as 

 a predator upon adult weevils in Mexico. 



Formica pallidi-fulva Latreille. — A single instance of this species 

 cutting its way into a boll weevil-infested square was observed by 

 Mr. C. E. Hood at Ashdown, Ark., September 2, 1908. The species 

 is commonly found on the cotton plants. 



Prt nolepis imparis Say. — Mr. C. E. Hood recorded this species as 

 an enemy of the immature stages of the boll weevil at Ashdown, 

 Ark., September 2, 1908. 



