1915.] Wheeler, Additions to the Ant-Fauna of North America. 397 
Eaton’s Cafion, Los Angeles County, Fresno, Brookdale and Friant (R. V. 
Chamberlin). I have also met with it in Arizona (Tucson, Tempe, Benson) | 
and have received specimens from Thatcher (R. V. Chamberlin) in the same 
state, from Alamito, New Mexico (G. von Krokow) and Ojos del Diablo, . 
in Chihuahua, Mexico (C. H. Tyler Townsend). 
As a result of the study of my material I submit the following arrange- 
ment of the species, subspecies and varieties of Solenopsis of the geminata 
group: ; 
1. Solenopsis geminata Fabricius 
var. diabola Wheeler 
var. nigra Forel 
subsp. medusa Mann subsp. nov. (in MS.) 
subsp. rufa Jerdon 
var. micans Stitz. 
subsp. zylont MacCook - 
subsp. maniosa subsp. nov. 
subsp. sevissima F. Smith (= pylades Forel) 
var. richtert Forel 
var. incrassata Forel 
var. tricuspis Forel 
var. quinquecuspis Forel 
subsp. electra Forel. 
2. Solenopsis aurea Wheeler 
subsp. amblychila subsp. nov. 
3. Solenopsis gayi Spinola. 
15. Pheidole longipes Pergande. 
This interesting species was originally described by Pergande from 
Lower California as a race (subspecies) of Ph. susanne Forel, and is evi- 
dently the form mentioned as a variety of this ant by Emery in his “ Bei- 
triige ” (p. 297) as occurring in California. I possess a worker cotype from 
the Pergande collection and also a worker from Emery taken at San Jacinto, 
Cala. Forel has shown that longipes is an independent species quite distinct 
from susanne. During the winter of 1910 I found longipes in several locali- 
ties in the vicinity of San Diego, California, especially at La Jolla and Lake- 
side. It makes rather large mound-nests not unlike those of Ph. morrise 
Forel in the South Atlantic States. The female (dedlated), which has not 
been described, measures nearly 6 mm. and is of a deeper ferruginous red 
color than the soldier, with paler and more yellowish legs. The whole 
body, including the gaster, is opaque, with only the borders of the mandibles 
and frontal area shining. The epinotum has a broad median impression 
and bears a pair of moderately large spines, which are. laterally compressed 
