WHEELER, NORTH AMERICAN ANTS 305 



ners of the head are rather indistinctly reddish or yellowish. The female 

 nitidiventris differs from that of vicintis in its more shining head. The male 

 seems to lack varietal characters. 



Of this variety, which is common in the western states, I have seen 

 many specimens from the following localities : 



Colorado : Salida, Boulder, Florissant, Buena Vista, Colorado City, 

 Colorado Springs, Manitou (Wheeler) ; Steamboat Springs (T. D. A. 

 Cocke rell) ; Pueblo (Jerome Schmitt) ; Stout, Ft. Collins and Dixon 

 Canyon (E. G. Titus). 



Wyoming: Carbon County (Wortmann). 



New Mexico : Eomeroville, San Ignacio, Gallinas Canyon, Santa Fe, 

 Eaton, Pecos, Silver City, Dripping Spring in Organ Mts. and Las Vegas 

 (T. D. A. Cockerell) ; Alamogordo (G. v. Krockow) ; Albuquerque (F. C. 

 Pratt). 



Arizona : Coconino Forest, Grand Canyon (Wheeler) ; Eamsey Canyon, 

 Huachuca Mts. (W. M. Mann and Wheeler). 



California : Santa Eosa ; Marin County. 



Emery cites this variety from Louisiana, but I believe that this must 

 be an error, for, according to my observations, it does not descend, at least 

 to the eastward, much below an altitude of 6000 feet, and is properly an 

 ant of the high plains and slopes of the Eockies. The two California 

 localities above mentioned are represented only by a couple of major 

 workers and these may be rubbed specimens of the true vicinus. 



6. C. maculatus vicinus var. maritimus var. nov. 



Closely resembling the preceding variety, but of smaller size in all phases 

 except the male. Length of worker major, 8-10 mm. ; worker minor, 6-7 mm. ; 

 female, 11-12 mm. (wings 12 mm.) ; male, 9-10 mm. The gaster is entirely 

 black in the worker major and female, or reddish only at the extreme base ; 

 the wings of the male are very r»ale. The female has the head, pro- and 

 mesonotum, scutellum and metanotum black, the remainder of the thorax, the 

 legs and petiole yellowish red, the mandibles, clypeus and antennae dark red. 



t 



California: Pacific Grove and San Jose (H. Heath) ; Catalina Island 

 (C. F.Baker). 



7. C. maculatus vicinus var. infernalis var. nov. 



This variety is based on several major and minor workers from Las 

 Vegas, N. Mexico (Wlieeler) : a single worker media from Santa Cruz 

 Mts., Calif. (J. C. Bradley) and three minor workers and two males 

 from Palo Alto, Calif. (W. M. Mann). These all closely resemble the 

 nitidiventris in sculpture, but the thorax is black like the head and 



