1951] 
Creighton — Arizona Ants 
99 
reliable as separatory characters for the worker. Three of 
them will apply to the female as well. The female of huachu- 
cana is larger than that of texana (8-9 mm. in huachucana) . 
It is also more heavily sculptured and possesses the same 
triangular lobe at the base of the antennal scape which 
marks the worker. In this connection it should be noted that 
the length given for the female of texana in Wheeler’s 
1915 publication (4) evidently included the wings. Wheeler 
gave the length of the female of texana as 11-11.5 mm. On 
the same page he gave the length of the dealated female 
of furvescens as 7.5 mm. Needless to say the second figure 
is the correct one for texana if, as is usually the case, the 
body length is what is being measured. The male of huachu- 
cana is larger than that of texana (4-5 mm. in texana, 
5.5-6 mm. in huachucana). The scutum in the male of 
huachucana does not project so strongly above the prono- 
tum. The basal face of the epinotum in the male of huachu- 
cana consists of descending anterior portion and a feebly 
convex posterior portion which form a distinct angle in 
profile (Plate 7, fig. 2). This face of the epinotum forms 
a single descending plane in texana. 
Literature Cited. 
1. Creighton, Wm. S. 
Psyche, Vol. 41, No. 4, p.189, 1934. 
2. Creighton, Wm. S. 
Bull. Mus. Comp. Zool., Vol. 104, p.152, 1950. 
3. Shreve, F. 
in Kearney & Peebles, U.S.D.A. Misc. Pub. No. 423, p.19 et seq. 1942. 
4. Wheeler, W. M. 
Bull. Amer. Mus. Nat. Hist., Vol. 34, No. 12, p.413, 1915. 
