334 BULLETIN UNITED STATES GEOLOGICAL SURVEY. 



expanding anteriorly; wings hyaline, cross-veins and stigma clouded 

 with pale brown. Length 9-10 mm . 



Antennae light brown ; arista reddish, plumose ; third antennal joint 

 nearly as long as the arista, linear. Face yellow, a black stripe runs 

 obliquely from the lower corner of the eye to the anterior oral margin ; 

 behind it the cheeks are yellow; profile of the face straight; the de- 

 pression under the antennae is hardly perceptible; the frontal tri 

 angle of the male is yellow, beset with black hair, th e vertex black ; 

 the female, the front has a greenish tinge, as if underlying the yellow 

 a slender yellow line runs from the antennae toward the yellow vertex , 

 the ocelli are placed on a cordiform black spot. Eyes densely pubescent. 

 Thorax blackish-green; on each side, between humerus and scutellum, a 

 rather broad, dull, honey-yellow stripe, with a short black streak in the 

 middle ; in front of the scutellum, a yellowish, rather obscure parallelo- 

 gram, emarginate anteriorly. Pleurae with a large yellow spot under 

 the humeri ; they are beset with yellow pile. Scutellum yellow, with 

 black pile on the edge. Halteres with yellow knobs. Abdomen honey 

 yellowish; first segment black; second and third with a narrow, paral 

 lei, black hind border ; the black border of the second segment is con 

 nected w T ith the black of the first segment by a black longitudinal stripe, 

 which is narrow in the female, broad and triangularly expanded anteri- 

 orly in the male; fourth segment with a broader black hind border; 

 the fifth black. Femora black ; knees and two- thirds of the tibiae brown- 

 ish-yellow; the last third black, or, on the intermediate pair, brownish; 

 tarsi reddish at base, brownish or black at tip. Wings grayish-hyaline; 

 stigma yellowish, with a small, pale brown cloud ; cross-veins at the base 

 of the first and last posterior cells and of the discal cell and the origin 

 of the third vein with small brown clouds; still smaller, almost imper- 

 ceptible clouds at the tip of the second vein, near its junction with the 

 first, and on the curvature of the vein closing the first posterior cell ; 

 this curvature is much less strong here than in V.fasciata; the second 

 vein ends in the first close by the tip of the latter. 



Sab. — Colorado Plains (W. L. Carpenter). I took a specimen in the 

 railway-carriage, between Wahsatch and Evanston, Utah, at an altitude 

 of 6,800 feet, August 3. Two males and one female. 



Volucella fasciata Macquart, Dipt. Exot., ii, 2, 22. — Occurs in 

 Texas; also in Manitou, Colo. 



Temnocera setigera n. sp. — Proboscis nearly twice as long as the 

 head, pointed at the end ; snout projecting in the shape of a cone ; scu- 

 tellum with fourteen black bristles along the edge; abdomen brownish- 

 yellow, with a black spot at the tip, embracing segment 5 and a part of 

 segment 4. Length 14 U1IU . 



Female. — Face and front honey-yellowish, clothed with black pile, 

 which is very short on the face and longer on the front ; the face is ex- 

 cavated below the antenna?, its lower part projecting in the shape of a 

 cone, the tip of which is bifid and slightly infuscated. Antennae : first 



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