154 Annals Entomological Society of America [Vol.11, 



Asilus orphne Walker (Fig. 28). , 



A black species and in large part shining. Mystax golden, all 

 the tibiae bright yellow and all the femora black. Wings hyaline. 

 Length 12-19 millimeters. 



Face narrow, covered with golden dust ; facial gibbosity prominent 

 and extending nearly to the antennae, mystax usually golden in 

 color but varying to pale yellowish, composed of many slender bristly 

 hairs; palpi and proboscis black, the former clothed with black hairs; 

 occiput with black hairs above and pale ones below. Thorax black, 

 thinly clothed with gray dust, hairs of the sides gray, of the dorsum 

 mostly black; wings hyaline, very faintly gray at the extreme apex 

 and along the narrow posterior border. Femora shining black, each 

 front one usually 3^ellow at the apex, each tibia and metatarsus yellow, 

 black at apex, other tarsal segments largely black. Abdomen black, 

 narrow margin of each segment above gray, clothed with gray hairs 

 which are most abundant towards the base. 



Commonly taken in the territory from Maine to Illinois and from 

 Canada to North Carolina. Specimens also are at hand from Colorado 

 and from Montana. 



Walker's description of orphne fits the female of this species well. 

 Dr. Johannsen agrees with me in identifying auceps. There is no 

 doubt but that the species under consideration is distinctus and it is 

 my opinion that this latter is the same as orphne, as is aeneobarbis 

 which is a name sent by Loew in a letter to Osten Sacken without 

 description. The name is sufficient to characterize the species 

 however, when it is known that Loew's specimens were from the 

 eastern United States. 



Asilus coquillettii n. sp. (Fig. 29). 



Black, all the femora black, all the tibiae in large part yellow. A 

 prominent crest formed of black bristly hairs extends the whole length 

 of the thoracic dorsum. In the region covered by this paper no other 

 species has such a crest. Length 13-16 millimeters. 



Facial gibbosity elongate and prominent and reaching nearly to 

 the antennae. Mystax composed of an abundance of rather fine long 

 hairs which are all black in the female and black on each side and 

 otherwise white in the male. Front in both sexes with numerous 

 long erect black hairs; antennae black, first two segments of each 

 usually hairy ; palpi black with black hairs ; lower part of the occiput 

 with some gray hairs otherwise with black hairs. Thorax thinh^ 

 clothed with yellowish dust, a crest of long black bristly hairs on the 

 middle of the dorsum reaches from the anterior part to the scutellum 

 which also is furnished with numerous similar hairs. Wings hyaline; 

 in the male each forward leg has the femur black, the tibia yellow 

 with a narrow black apex, tarsus yellow with the exception of the 

 fifth segment and its claws which are black; middle leg the same; 

 hind leg black with the exception of a little more than basal half of the 

 tibia which is yellow; in the female the legs are similar but the front 

 and middle tarsi have the black including the apex of the first segment 



