1915.] Wheeler, Additions to the Ant-Fauna of North America. 409 
anterior angles of postpetiole very blunt. Color yellow; gaster, legs and antenne 
paler, mandibles often reddish, their borders and the anterior edge of the clypeus 
black. 
Worker. Length: 1-1.3 mm. 
Head more rectangular, with less convex sides than in the preceding forms; 
antennal scapes not extending beyond the posterior corners of the head. Sculpture - 
of thorax and petiole as in the soldier; head very smooth and shining. Color yellow, 
mandibles, clypeus, antennz and legs somewhat paler, dorsal surface of head slightly 
brownish. S289 
‘Six soldiers and six workers taken from a single colony in Miller Cafion, 
Huachuca Mts., Arizona (5300 ft.). This may be a distinct species, but for 
the present I prefer to regard it as a very pronounced subspecies of cali- 
fornica. 
31. Pheidole hyatti solitanea subsp. nov. 
Soldier. Length 3-3.3 mm. 
Even darker in color than the var. ecitonodora Wheeler; legs brown; decidedly 
smaller than this variety and the type of the species, and with the antennal scapes 
considerably longer, so that they reach nearly to the posterior corners of the head, 
epinotal spines a little more slender. 
Worker. Length 2 mm. 
Smaller than the worker of hyatti and the var. ecitonodora, with the posterior 
portion of the head and upper portion of the pronotum more glabrous and shining, 
and without rugules and punctures. _ 
Female. Length: 4.5-5 mm., wings 6 mm. 
_ Very small compared with the female of other forms of the species. Red; gaster 
dark brown, reddish at the base of the first segment; posterior borders of segments 
yellowish; antennal scapes reaching a little beyond the posterior corners of the head, 
somewhat less dilated at the base than in other forms of the species. 
Described from seven soldiers and seven workers taken by myself on 
Point Loma, near San Diego, California, and a single soldier and three 
females taken by Mr. Percy Leonard in the same locality. 
32. Pheidole crassicornis vallicola subsp. nov. 
Soldier. Length: 3.5-4 mm. 
Differing from the typical crassicornis, its var. diversopilosa Whlr. and its subsp. 
porcula Whir. with the var. tetra Whlr. in sculpture, pilosity and coloration. The 
mandibles are coarsely striatopunctate over their whole upper surface, the clypeus is 
subopaque and rugulose in the middle, and the reticulate rugee on the anterior por- 
tion of the head are coarser. The pronotum above is shagreened and rugulose and 
only slightly shining, the postpetiole densely punctate and subopaque like the petiole. 
