1915.] Wheeler, Additions to the Ant-Fauna of North America. 403 
Described from six soldiers and six workers, taken in the valley of the 
Santa Cruz River, near Tucson, Arizona, in the same place as the preceding 
species. The colonies were small and contained very few soldiers. Like 
the preceding this species is probably carnivorous. The nests were perfect 
craters, 3-5 inches in diameter, with a large central opening half an inch 
in diameter. 
Pheidole virago is related to Ph. guilelmi-muelleri Mayr and androsana 
Whlr., but the sculpturing of the head of the soldier is more extensive and 
of a different character in both of these species, and the antennal scape 
in guilelma-muelleri is dilated and flattened, while androsana has a smooth, 
differentiated, scrobe-like area for the antennal scape and the frontal carine 
are prolonged backwards. : 
19. Pheidole fimbriata Roger. 
Some years ago I described a large deiilated female Pheidole taken by 
Oslar at Nogales, Southern Arizona, as Ph. rhea. More recently I received 
from Dr. A. .G. Ruthven several winged specimens of this same ant from 
Cuatololapan, Vera Cruz, Mexico, accompanied by the soldiers and workers. 
The latter prove on examination to be specimens of Ph. fimbriata Roger, 
a species widely distributed through tropical America, so that the name rhea 
must be relegated to the synonymy. The wings of the female are nearly 
16 mm. long, heavily infuscated, with dark brown veins and stigma. 
20. Pheidole tepicana cavigenis subsp. nov. 
Soldier. Differing from the typical tepicana Pergande in the shape and sculpture 
of the head, the shape of the pedicel and in color. The head is proportionately 
shorter and the sides are straight and subparallel (in tepicana feebly convex) but 
distinctly concave at and in front of the eyes, with the anterior angles prominent and 
everted. The eyes are distinctly larger and more convex, the rugz on the front and 
sides of the head are more distinct, but the transverse ruge on the occiput are feebler 
and more reticulate. The petiolar node is perceptibly emarginate (entire in tepicana), 
and the postpetiole is decidedly broader. The thorax and petiole are concolorous 
with the head, the mesonotum infuscated and the vertex with a black spot. 
Described from three specimens (one immature) taken from a single 
small colony in Miller Cafion, Huachuca Mts., Arizona (5600 ft.). These 
have been compared with Mexican specimens of a form which agrees very 
closely with Pergande’s tepicana, except in color. 
