448 KANSAS UNIVERSITY SCIENCE BULLETIN. 



all tibiae a shade lighter. Wiags hyaline, fuscous on anterior 

 part, which color follows the spurious vein almost to the cross- 

 vein, thence it borders the third vein posteriorly to the tip, a 

 subhyaline space in each of the marginal and submarginal 

 cells, the third vein bent deeply into the first posterior cell, 

 and at this point bearing a stump posteriorly. Length, 12 mm. 

 Two specimens ; Bill Williams Fork, Arizona. Dedicated to 

 Dr. F. H. Snow, whose untiring energy results in so many 

 good things. 



Conops gracilis Will. 



Specimens from Bill Williams Fork, Arizona, agree with this 

 species, except the cheeks are generally blackish or red in color. 

 This color varies in extent and is often resolved into numerous 

 small dots. The attenuated portion of the antennal style is 

 longer than in the type. The female differs from the male only 

 in size, being larger, and the abdomen is more extensively 

 pollinose. 



Tetanocera inopa, n. gp. 



Male: Head yellowish, occiput grayish pollinose, with a 

 black spot in center, above which, in certain lights, shows a 

 short whitish pruinose stripe on each side ; front opaque, viewed 

 from behind shows a very narrow silvery stripe along the 

 eyes, a median longitudinal shining stripe passing over the 

 black ocellar tubercle, is excavated in front of it, and attains 

 the anterior margin, where it is tinged with brown, a black 

 spot on each side of the antennae, two more back of these, bear- 

 ing the two lowest orbital bristles ; antennae testaceous, second 

 joint shining, with bristly hairs above and below, slightly in- 

 fuscated on upper side, third joint opaque, about equal to sec- 

 ond in length, slightly excavated above, arista yellow and with 

 white plumosity ; face and cheeks immaculate, yellow, in cer- 

 tain lights whitish, mouth-parts yellow. Thorax testaceous; 

 mesnotum grayish pollinose, bearing two subdorsal and two 

 sublateral brown stripes ; scutellum fuscous in center above, 

 grayish pollinose on sides, with four bristles ; pleurae subshining ; 

 hal teres yellow, knobs slightly infuscated. Abdomen brown- 

 ish yellow, dark brown on dorsum, posterior borders of segments 

 lighter, hyp'opygium sordid yellow. Legs yellow, last three 



