wheeler: ants of the genus formica. 551 



Both are southern forms, the true paUidcfulm being very rare as far 

 north as New Jersey and New York. The species is very constant 

 morphologically although it varies greatly in color, and pilosity. The 

 males of all the forms I have seen are very slender, have very large 

 eyes and resemble the males of the subgenus Proformica in ha\ang 

 the stipes of the genitalia projecting considerably beyond the other 

 appendages. What Mayr described as the female of pallid cfvlra from 

 New Jersey, I believe with Emery to be the female of F. difficilis. 



133. F. (N.) PALLiDEFULVA PALLiDEFULVA var. succiNEA Wheeler. 



F. pallidefulva var. succinea Wheeler, Bull. Amer. mus. nat. hist., 1904, 20, 

 p. 369, ^ . 



W'ORKER. 4.5-6 mm. 



Differing from the worker of the typical form in color, being through- 

 out of a richer, purer, more reddish yellow, and in having the pubes- 

 cence on the gaster even shorter and more inconspicuous. The whole 

 surface of the body seems to be somewhat smoother than in the typical 

 form and the integument harder. 



Female. Length 8-9 mm. 



Whole body red, decidedly darker than the worker; mandibles 

 more brownish, legs more yellowish. Wings colorless, with pale brown 

 veins and stigma. 



Male. Length 8-10 mm. 



Body long and slender. Head small, with very large* eyes, broadly 

 rounded behind. Cheeks very short, straight. Mandibles pointed, 

 edentate, their blades rather broad. Clypeus carinate. Frontal 

 carinae diverging. Maxillary palpi 6-jointed. Antennae very slender. 

 Thorax narrowed in front. Petiole very thick and low, with a very 

 blunt border, which, seen from behind, is transverse and feebly notched 

 in the middle. Gaster long and slender. Stipes of genitalia long and 

 slender, considerably surpassing the other appendages. 



Head, thoracic dorsum, and epinotum subopaque; pleurae and 

 gaster shining. Hairs very short, confined to the thoracic dorsum 

 and top of head. 



Honey yellow; ocellar triangle black; mesonotum streaked with 

 brownish. Wrings colored as in the female. 



Type locality. — Texas: Austin (Wheeler). 



Texas: Montopolis, Milano, Bee Creek (Wheeler); Victoria (Hun- 

 ter). 



Oklahoma: Ponca City (A. C. Burrill). 



I have taken this form in the sandy or pebbly soil of the Texan post- 

 oak woods and among the limestone hills of Travis County. It rarely 



