234 KANSAS UNIVERSITY (QUARTERLY. 



This species is similar to intrudens O. S. but differs in the color of 

 the front, face, occipital, thoracic and scutellar pile, and of the scutel- 

 lum; differs also in the shape of the abdominal spots; it is smaller. 

 It is still further removed from ajualopis O. S. In none of the num- 

 erous specimens do the lunate spots show a tendency to divide into 

 two. 



Syrphus disjectus "Will. 



One female specimen, Manitou Park, Colo. (Aug.). — Described 

 from state of Washington specimens. 



Syrphus ruficauda Snow, Kan. Univ. Quart., I, p. 36, pi. vii, fig. 3. 



Four males and one female, Manitou Park, Colo. (July and Aug., 

 9000 ft.); two males. New Mexico (Gaumer). One of the Colorado 

 males which was overlooked when the description was drawn, meas- 

 ures but 6 mm. The largest male is 9 mm. in length. A very dis- 

 tinct species in its bright red fourth and fifth abdominal segments. 



Syrphus creper n. sp. 



Syrphus pauxillus Snow, 1 c. p. 37* (nee Will.) 



? Syrphus lotus Will, var., Synopsis, p. 75. 



Male, female. Related ■io pauxillus Will. Eyes pilose; the abdom- 

 inal spots do not reach the lateral margin, those of the third and 

 fourth segments arcuate. — Length 7 to 9 mm. 



Male. Frontal and vertical triangles black, with black pile, the 

 former grayish pollinose except in the middle anteriorly. Antennae 

 black; the third joint brownish, reddish below. Face prominent, 

 yellow, with a strong greenish tint: in the middle and along the oral 

 margin black; the facial stripe is much narrower than the yellow por- 

 tions on each side of it; cheeks brownish yellow, above with a broad' 

 black stripe; sides of face with sparse black pile. Eyes pilose. 

 Occiput with a fringe of whitish hair. Thorax metallic greenish 

 black, on the dorsum with three well separated narrower darker stripes; 

 pile yellowish. Scutellum brown, basal angles and border of metal- 

 lescent greenish black. Abdomen a little shining, with yellow spots 

 which in the best preserved specimens have a greenish tint; spots of 

 second segment straight, slightly oblique, more than twice as long as 

 wide, widely separated from each other and the lateral margin; spots 

 of third segment oblique, arcuate, concave before and convex behind, 

 reaching the lateral and falling short of the anterior margin (except 

 in rare cases), separated from each other more or less widely (rarely 

 joined together), truncate at both ends, widened but not rounded at the 



*In line 3 of the page indicated above, the words male and female should be made to 

 change places. 



