WHEELER, NORTH AMERICAN ANTS 315 



15. C. fumidus var. fragilis Pergande 



Camponotus fragilis Pergande, Proc. Calif. Acad. Sci., (2) IV, p. 26, g , 1893 ; 

 FoREL, Biol. Centr. Amer., Ill, p. 133, 1899-1900. 



C. fumidus var. fragilis Emery, Zool. Jabrb. Abth. f. Syst.. VIII, p. 336, 1894. 



Differing from festinatus only in its paler color. Botb worker major and 

 minor are pale, wbitish yellow ; tbe former witb tbe mandibles and antenna! 

 scapes pale brown and pale brown bands on tbe gaster. Tbe pilosity is like 

 that of festinatus, and tbe antennal scapes have numerous, very delicate, 

 white, erect hairs. The female and male are unknown. 



This variety was originally described from San Jose del Cabo and San 

 Fernando, Lower California (G. Eisen). I have examined three cotypes. 

 One worker major and one minor which I took at Alamito, Presidio 

 County, Texas, seem to belong to this variety, but the yellow tint of the 

 body is deeper and more like that of festinatus. They may represent 

 very pale specimens of this variety. 



16. C. fumidus var. spurcus var. nov. 



Differing from festinatus in the darker coloration of the workers and female. 

 In all of these phases the body is more sordid yellow ; the worker major has 

 the whole dorsal surface of the head dark brown or black, the mandibles deep 

 red, with black borders, the antero-median portion of the clypeus and anterior 

 portion of the front reddish, the antennal scapes, except their extreme base 

 and apex, black, the dorsal surface of the thorax and petiole and the bands 

 on the gaster dark brown. The femora and tibiae may also be more or less 

 infuscated. In tbe minor worker, the posterior portion of the head and often 

 also the thoracic dorsum are brown. The female is colored like the worker 

 major, with the mesonotum and scutellum dark brown and subopaque and the 

 bands on the gaster darker and broader than in the female festinatus. Tarsi, 

 antennal scapes and funiculi brown. I have not seen the male. 



Described from numerous specimens collected by myself in southwest- 

 ern Texas (Toronto and Paisano Pass, in Brewster County, and at Fort 

 Davis) and a female and worker taken by Oslar in the Huachuca Mts., 

 Arizona. There can be little doubt that in the dry regions of Mexico, 

 western Texas and southern Arizona, both this variety and fragilis will 

 be found to be connected with festinatus by numerous transitional forms. 



17. C. vafer sp. nov. 



Worker major. Length, 12-14 mm. ; head, 3.5 x 3 mm. ; scape, 2.8 mm. ; 

 hind tibia, 3.2 mm. 



"With the stature of vicinus. Head resembling that of vicinus in shape 

 Mandibles 5- to 6-toothed. Eyes rather convex. Clypeus keeled, its anterior 

 border distinctly notched in the middle, with a short, rounded lobe on each 



