1915] Wheeler, Additions to the Ant-Fauna of North America. 417 
Head, excluding the mandibles, about as long as broad, with very short cheeks, 
rounded sides behind the eyes and distinctly excavated posterior border. Mandibles 
well-developed, with dentate borders. Clypeus convex, with three longitudinal 
ridges, its anterior border entire. Antenne 10-jointed; scape as long as the second 
funicular joint, which is four times as long as the first and longer than joints 3-5 
taken together. Thorax rather large, elliptical, broader than the head; mesonotum 
with distinct Mayrian furrows; epinotum unarmed, feebly convex and steep, without 
distinct base and declivity. Petiole with a peduncle nearly as long as the rounded 
node. Postpetiole transverse, about 14 times as broad as long, rounded above and 
on the sides.. Gaster narrow; legs slender. 
Shining; mandibles smooth; head rugose-punctate; thorax and petiole longi- 
tudinally rugose, pleure and epinotum more opaque, gaster and dorsal surface of 
petiole smooth and shining. 
Hairs yellowish, long and erect, much as in the worker but proportionally longer 
on the legs. | 
Black; mandibles and tip of gaster sordid yellow; clypeus, antennz and legs 
piceous; tarsi and articulations of legs yellowish. Wings brownish hyaline, with 
brown veins and stigma, . . 
Described from numerous specimens taken by myself in the following 
localities: | 
Texas: Austin (type locality); New Braunfels, Alamito in Brewster 
County, Alice, San Angelo, Fort Davis, Kenedy, Langtry, Barkdale and Del 
Rio. 
Arizona: Miller Cafion, Huachuca Mts. 
This ant nests in small craters in dry, grassy places. There are scarcely 
more than 70 individuals in a colony. ‘The workers are very timid and 
forage singly; the winged phases appear during the first week in June. 
Subfamily DoLICcHODERIN. 
46. Dolichoderus (Hypoclinea) taschenbergi Mayr var. aterrimus 
hom. nov. 
This name is suggested for the var. gagates Wheeler as Emery had 
previously described a Dolichoderus (Monacis) gagates from Para, Brazil. 
47. Bothriomyrmex dimmocki sp. nov. 
Worker. Length: 1.6-1.8 mm. . | , 
Closely resembling the Mediterranean B. meridionalis but with eyes nearly twice 
as large and the distance between the eyes and the anterior borders of the head nearly 
equal to the length of the eyes. The clypeus is proportionally longer and more 
