THE DIPTEROUS GENUS DOLICHOPUS IN NOETH AMERICA. 223 



about as long as their tibiae, infuscated from the tip of the first joint, 

 still the second and third joints sometimes yellowish at base; first 

 joint about as long as the remaining four together; fourth joint short- 

 est; middle tarsi scarcely as long as their tibiae, colored like the fore 

 tarsi. Calypters and halteres yellow, the cilia of the former black. 



Wings (fig. 160) strongly tinged with brown, sometimes more 

 yellowish brown in front of second vein; costa with a knot-like 

 enlargement at tip of first vein; last section of fourth vein sharply 

 bent before its basal third, sometimes with a stump-vein at the 

 posterior angle of this bend (this stump is present in most of the 

 females I have seen) ; hind margin of wing deeply notched at tip of 

 fifth vein, which is bent at a right angle near the middle between the 

 cross-vein and the wing margin; wings broad, widest near the cross- 

 vein, narrowing to the anal angle. 



Female. — ^Face wide, usually dark gray, sometimes more whitish or 

 yellowish, antennae smaller than those of the male; fore coxae with 

 rather long and conspicuous black hairs on the anterior surface ; hind 

 tibiae normal; orbital cilia about as in the male, except that they are 

 scarcely flattened at all; wings (fig. 160a) of nearly normal shape, 

 rather broad and with the hind margin rather evenly rounded, the 

 anal angle not at all prominent, deeply notched at tip of fifth vein, 

 the bend in fourth vein more distant from the cross-vein than in the 

 male, being about as far from it as the cross-vein is long. 



Redescribed from 5 males and 8 females. J. M. Aldrich has speci- 

 mens from Pine Lake, southern California, taken by Johnson; 

 Pacific Grove, California, May 9, (Aldrich); Vollmer, Idaho, Septem- 

 ber 26, (Aldrich) ; Colorado, (Baker) ; E. P. Van Duzee took it at 

 Tallac Lake, Tahoe, California, July 17, 1915. 



Tyi)e locality. — ^Monterey, California. . Melander and Brues report 

 it from California. 



No. 161. DOLICHOPUS BRUESI. new name. 



Eygroceleuthus propinquus Melander and Brues, Biol. Bull., vol. 1, p. 131 (pre- 

 occupied). 



The following is a copy of the original description of this form as 

 they compared it with consanguineus Wheeler and which still covers 

 most of the points of difl'erence between them: 



Darker, all coxae piceous; femora piceous beneath near the base. Postocular cilia 

 black, none of the orange colored cilia typical of consanguineus present, not so many of 

 the infraorbital cilia flattened, lamellae of hypopygium darker. 



All the above characters are more or less conspicuous in the speci- 

 mens I have seen, but some have the fore coxae quite yellow on the 

 anterior surface, others have them almost wholly greenish. Besides 

 the characters given above I find in the specimens before me that the 

 wings in both male and female are a little wider at the tip of sixth 

 vein, making the anal angle a very little fuller, in the male making the 



