484 BULLETIN: MUSEUM OF COMPARATIVE ZOOLOGY. 
67. F. EXSECTOIDES EXSECTOIDES var. DAVISI, var. NOV. 
Worker. Length 4.5-7.5 mm. 
Differing from the worker of the typical form only in having the 
posterior portion of the head and the dorsal portion of the pro- and 
mesonotum distinctly infuscated, at least in many of the workers of 
all sizes in the colony. 
FEMALE (DEALATED). Length 9-11 mm. 
Gaster red like the thorax and head and transversely banded with 
black, owing to the anterior and posterior border of each segment 
being of this color. 
Described from a number of workers and deilated females taken at 
Newfoundland, N. J., by Mr. Wm. T. Davis. I have also taken this 
same form at Natick, Mass. Its validity as a variety will have to be 
tested by further study of the species. Possibly the color of the gaster 
in the queens is due to old age. It is, however, constant in twenty-one 
specimens taken from twelve different nests in New Jersey and fully 
thirty females from as many nests in Massachusetts. 
68. FE. EXSECTOIDES EXSECTOIDES var. HESPERIA, Var. Nov. 
Worker. Length 4.5-6 mm. 
Differing from the typical form in the shape of the petiole, which is: 
much narrower, lower and thicker, with the anterior surface convex, 
the posterior flattened, and the border, though sharp, not being blade- 
like, or cultrate. Seen from behind it is truncated and like the petiole 
of F. dakotensis in outline. The posterior corners of head, ocellar 
triangle, and a spot on the pro- and mesonotum fuscous. The red 
color of the body is a littie more brownish and the legs darker than in 
the typical form. Frontal area rather opaque. 
Described from twenty-eight workers which I took from a single 
colony nesting under a cluster of stones in Cheyenne Canyon, near 
Colorado Springs, Colo. 
69. F. EXSECTOIDES OPACIVENTRIS Emery. 
F. exsectoides var. opaciventris Emery, Zool. jahrb. Syst., 1893, 7, p. 653, 8 ; 
Wheeler, Bull. Amer. mus. nat. hist., 1906, 22, p. 405. 
WorkeER. Length 4.5-6 mm. 
Differing from the typical exsectoides in having the antennal scapes 
distinctly thickened at their tips and in the greater abundance of the 
