HENRY J. FRANKLIN. 99 



Verdes (six miles south of Colonia Garcia), Sierra Madre of 

 western Chihuahua, Mexico — about 7,000 feet altitude. 



Malar space rather long. Head mostly dark. Dorstini of thorax yel- 

 loiv in front aiid with a posterior fringe of yellow on sciitelliim ; pleura 

 yellow ; dorsum of abdomen of females zvith first three segments yellow, 

 fourth black, fifth black with apical margin bearing ferruginous hairs, 

 and sixth ferruginous. Dorsum of male abdome?i with three basal seg- 

 ments yellow, the apical half bearing black, yellow and ferruginous 

 hairs. 



Queen. Head. — Face, occiput and ventro-lateral portions all black, 

 except for a slight sprinkling of light hairs, visible with a lens, above 

 the bases of the antennae. Labrum sulcate in the middle and fringed 

 on free edge with ferruginous-yellow hair. Malar space distinctly 

 longer than its width at apex, about one-third as long as eye. Cly- 

 peus rather smooth and shining and very delicately and sparsely punc- 

 tate over the entire surface, except the corners. Third antennal seg- 

 ment somewhat longer than the fifth ; the fifth distinctly longer than 

 the fourth. 



7"/%or«.r.— Mesopleura covered with light yellow pile from the tegula- 

 to the bases of the legs, the yellow of the two pleura being connected 

 by a rather narrow band of the same color crossing the dorsum in 

 front, this yellow band not nearly extending back on the middle of the 

 dorsum to even with the tegulae, but its hind border curving forward 

 strongly from them on each side. vScutellum with a mere fringe of 

 yellow hairs behind. Dorsum otherwise entirely covered with black 

 pile, except for a very small bare spot on the center of the disc. 



Abdomen. — Dorsum: first three segments clothed entirely and rather 

 densely with bright yellow pile ; segment four entirely dark ; segment 

 five mostly clothed with black pile, but with ferruginous hairs on its 

 apical margin ; segment six with ferruginous pile. Venter black to- 

 wards the base, but with the apical fringes of the second, third and 

 fourth segments light yellow ; hair fringing the apical margin of the 

 fifth segment and the entire sixth segment yellow. Hypopygium with- 

 out median carina. 



Wings. — Somewhat stained with brown. 



Legs. — Middle and hind coxae usually bearing some yellow hairs, 

 but sometimes entirely black ; femora all dark and bearing no light 

 or yellow pile ; front and middle tibias dark ; hind tibiae sometimes 

 entirely and always mostly black, sometimes with some of the hairs in 

 the hind corbicular fringes tinged with pale ferruginous color. 



Worker. — Like the queen, except in size, but with corbicular fringes 

 entirely black and the pile of the apical abdominal segment and the 

 apical fringe of the fifth segment much less strongly ferruginous than 

 in the queen. 



TRANS. AM. ENT. SOC. , XXXIX. 



