550 WHEELER. 



Wawawai (type locality), Kiona and Ellensburg, Washington. The 

 specimens from Ellensburg are somewhat darker, with the thorax 

 and petiole uniformly pale brown like the gaster, thus representing a 

 transition to the var. hlanda. 



155. Formica rufiharhis Fabr. var. occidua Wheeler. 

 California: Berkeley (Wheeler). 



Recorded from many localities in the Coast Range of California 

 and from Wawawai, Washington. As I did not find this ant in the 

 Yosemite or about Lake Tahoe, I infer that it does not occur in the 

 Sierras, at least at elevations above 4000 ft. or east of California. 



156. Formica nifiharhis var. gnava Buckley. 



Recorded from various localities in Texas, New Mexico, Arizona, 

 Southern California, Colorado, Utah and Mexico, as far south as the 

 State of Hidalgo. In the northern portion of its range this variety 

 occurs only at low altitudes in warm, shady canyons. 



157. Formica cinerea Mayr var. altipetens Wheeler. 

 Colorado: Chimney Gulch, Golden, 9500 ft. (E. J. Oslar). 

 Montana: Beaver Creek, 6300 ft. (S. J. Hunter). 



Previously known from Florissant and Cheyenne Mt., Colo., where 

 I found it at elevations between 7000 and 8200 ft., and Pachuca in 

 Hidalgo, Mexico, 9000 ft. 



158. Formica cinerea var. neocinerea Wheeler. 

 Illinois: Hyde Park, Chicago (Wheeler). 



Recorded from Illinois, Indiana, South Dakota, Colorado and Cali- 

 fornia. 



159. Formica cinerea var. canadensis Santschi. 

 " Worker. Length 4. .5-6 mm. 



Black. Anterior portion of head, antennae, excepting the terminal 

 funicular joints, legs, excepting the coxae and often the middle of the 

 femora, base of the petiole brownish red. Pubescence a little less 

 abundant than in the type. Epinotum a little more angular. Petiole 

 as in the var. neocinerea Wheeler, from which it differs, as also from 

 the var. altipetens Wheeler, in the entirely black color of the thorax, 

 which makes it resemble F. fmca L, var. subaenescens Emery. 



Female. Length 9-9.5 mm. 



The front of the head is nearly black; all the remainder of the 

 body black; antennae and legs as in the worker. 



