SYNOPSIS OF NORTH AMERICAN SYRPHID^. 147 



by its large head. In all my specimens the length is somewhat greater 

 than that given above. The apical half of the costa is not at all mar- 

 gined with cinereous black, though the veins in that region are narrowly 

 blackish clouded. Of course it is possible that my determination is not 

 correct, the more so from the fact that the species belongs to a group 

 the members of which are not easily distinguishable. 



A single specimen from Mexico with the preceding (J. Aquilera), and 

 resembling it, I have not been able to determine. The head, in struc- 

 ture and coloration throughout, is very nearly the same, except that 

 perhaps the third joint is a* little more excised above, and there is a 

 broad brown stripe on the cheeks. The dorsum of the thorax, except 

 broadly on the sides and behind, is shining black. The second, third, 

 and fourth segments of the abdomen have a broad, indetinite, posterior 

 blackish band. The legs are darker colored, towards the base of the 

 femora, blackish. The wings on the outer half are almost pure hyaline ; 

 the base of the wings is brownish, lighter in the basal cells, and becom- 

 ing dark brown ou the outer part of the costal cell; opposite this darker 

 color the cross-veins are all clouded broadly with dark brown, forming 

 a large, conspicuous, coalesceut dark-brown spot. The abdomen is less 

 robust, and the size smaller (12™™). 



Volucella (Temnocera) Hagii. (Plate V, fig. 8.) 



Volucdia Haoii J aennic'ke, Neue Esot., Dipt., 89. 



Temnocera setigera Osten Sackeu, West. Dipt., 334; v. d. Wnlp, Tijdschr. voor 

 Ent., XXV. 



Habitat. — Mexico (Jaen.), j^ew Mexico (O. S.), Arizona! 

 5,9. Length, 14™™. "Proboscis nearly twice as long as the head, 

 pointed at the end. Face and front honey-yellowish, clothed with black 

 pile, which is very short on the face and longer ou the front; the face is 

 excavated below the antennse, its lower part projecting in the form of a 

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

 two joints yellowish-brown; third joint light brown, excised above, so 

 that its latter portion is much narrower; arista, feathery, black ; pro- 

 boscis 7 to 8™™ long [a little shorter in the male], black, pointed. Thorax 

 densely clothed with a yellowish recumbent pubescence, and, mixed 

 with it, short, black, erect pile; they almost conceal the dark greenish 

 ground-color, as well as the obscurely visible yellowish lateral stripes 

 and large yellowish spot in front of the scutellum ; on the sides of the 

 thorax, several stiff black bristles; a pair [or more] of such bristles, but 

 smaller, a little in front of the scutellum ; pectus blackish. Scutellum 

 somewhat inflated, honey-yellow, beset with mixed black and yellow 

 pubescence; along the edge fourteen stiff black bristles. Abdomen 

 brownish-yellow [or yellow] ; second and third segments with broad 

 blackish parallel borders posteriorly, formed of short and very dense 

 black hairs ; the cross-bands thus produced are very distinct when 

 viewed obliquely, although almost invisible when viewed from above ; 



