1 68 Annals Entomological Society of America [Vol. II, 



with more or less black on the outer side, especially on the apical half; 

 tibiae and metatarsi black at the apexes, other tarsal segments mostly 

 black. Abdomen dull black, before the incisures with narrow white 

 bands, in the front margin of which there are on either side in each two 

 or more bristles. 



Male and female taken in south-western Colorado, July 14, 1899, 

 by E. J. Oslar. 



In a former paper published in the Ohio Naturalist I identified this 

 species as arizonensis but after studying the type of that species have 

 come to the conclusion that the preceding must bear that name. 



Asilus fuscatus n. n. 



New name for Philonicus obscurus Hine which is preoccupied by 

 Asilus obscurus Meigen from Europe, Syst. Beschr. (1820) II, 315, 12. 



General color dark with the wings pale fumose all over. The ab- 

 domen has different shades according to the angle from which it is 

 viewed. Length 10 to 16 millimeters. 



Gibbosity of the face small with a few bristles, part of which are 

 black and the others white; face with gray dust, front with some 

 small black bristles and occiput above with a row of black bristles; 

 antennae black, first segment of each longer than the second, third, 

 exclusive of the arista, about as long as the other two together; arista 

 a little shorter than the third segment. Thorax clothed with brown- 

 ish gray dust, with a mid-dorsal dark brown stripe narrowly divided 

 before, and on either side two spots of the same color, one before the 

 transverse suture and the other behind it. Wings uniformly darkened 

 all over, but it would not be far wrong to say that they are hyaline. 

 Legs black and reddish; coxae colored like the sides of the thorax, 

 femora entirely black except that the posterior ones are often narrowly 

 yellowish at the extreme base of each; tibiae reddish at the base and 

 black at the apex of each; the extent of the two colors on the tibiae 

 is somewhat variable, the tendency being for the black to be most 

 extensive on the outside and the reddish on the inside; feet with the 

 first two segments of each reddish on basal part, other segments 

 usually entirely black. Abdomen opaque black, before the incisures 

 with gray bands, in the front margin of each of which on either side 

 are two or more distinct bristles. 



A male from Kentucky, across the river from Cincinnati, collected 

 by Charles Dury; two females from Washington, D. C. ; males and fe- 

 males from Riverton, N. J., and Pendleton, N. C, procured from Mr. 

 Charles W. Johnson ; several specimens from New Jersey and Pennsyl- 

 vania, collected by H. S. Harbeck; also specimens from New York, 

 Massachusetts and Virginia. 



Asilus rufipennis Hine. 



General color gray, legs reddish, wings of a uniform reddish color 

 all over. Length 15 millimeters. 



Gibbosity of the face small, furnished with a few bristles which 

 usually are all white, but in one or two of the species studied there is 

 now and then a black bristle mixed with the others; face and front 



