174 Psyche [December 



11. Head, thorax, petiole, antennse and legs uniformly deep brownish 



red melliger mimicus TVTieeler. 



Thorax and posterior portion of head usually very dark red 



or black 12 



12. Petiole very blunt and rounded above, scarcely compressed anteroposter- 



iorly; color of head and thorax variable. . melliger mimicus vav. jesuita Wheeler. 

 Petiole somewhat more compressed anteroposteriorly; pilosity more abundant; 

 thorax, gaster and posterior portion of head black 

 melliger lomaensis subsp. nov. 



13. At least the whole head and thorax light yellowish red 14 



Head and thorax largely black or dark brown 15 



14. Gaster brown, blackish or piceous melliger semirufus Emery. 



Gaster red, like the head and thorax . . . melliger semirufus var. testaceus Emery. 



15. Head, thorax and gaster black; head much longer than broad; gula flat 



or slightly concave lugubris Wheeler. 



Most of the body dark brown; head but little longer than broad, 

 gula convex 16 



16. Pubescence very short; thorax, gaster and much of the head dark brown; 



mandibles and anterior border of clypeus and cheeks yellow . . yuma sp. nov. 

 Pubescence longer and more silvery; yellow of head extending further 



posteriorly yuma var. flaviceps var. nov. 



M3Tmecocystus melliger Forel. 



YeTy few United States localities for this ant are cited in my 

 former paper. I have since obtained specimens from the following 

 places : 



Texas: Laredo (C. E. Hood); Hondo and Catulla (J. D. 

 Mitchell); Kenedy (G. P. Goll). 



Arizona: Huachuca Mts. (C. R. Biederman). 



New Mexico: Rito de los Frijoles (T. D. A. Cockerell); Santa 

 Fe (F. C. Pratt). 



The specimens from Kenedy, Texas, comprise two ordinary 

 workers, a replete, a male and a winged female. I describe the 

 female and male, because they have not been seen heretofore. 



Female. Length 12 mm. 



Body stout and broad. Head subrectangular, excluding the mandibles a little 

 broader than long, a little narrower in front than behind, with feebly convex lateral 

 and posterior borders. Eyes but little larger than in the worker major. Thorax 

 considerably broader than the head. Petiole low, more compressed anteroposte- 

 riorly than in the worker, its upper border blimt and feebly impressed in the middle. 

 Gaster larger, elliptical, somewhat flattened dorsoventrally. 



