2 2 KANSAS UMVERSITV QUAKTERl.V. 



form black hairs above and below; last three joints black, of nearly 

 equal length, compressed, the last joint slightly longer and more com- 

 pressed, with a cluster of white hairs at the tip above the claws. 

 Middle and hind tarsi black from tip of first jcjint. Wings yellowish, 

 long, rounded at tip, narrowed at base; the third vein keeps close to 

 the second to a jjoint opposite the flexure of the fourth, then makes a 

 broad curve backward, so that the submarginal cell is very broad 

 before its tip, and again narrowed; costa thickened from the top of 

 ^^he first vein for a considerable distance. 



Female. Face grayish white, broad; wings a little narrowed at 

 base, the third vein only a little curved. Fore tarsi missing in my 

 specimen. 



Length, 6.5 to 7.5 mm.; of wing 6 to 6.5 mm. 



Two males, one female, California ( U. K). 



Dolichopus willistonii, n. sp. 



Shining green, feet \ellov.', cilia of inferior orbit pale, of the tegulae 

 black, fourth vein not broken, antennae red. 



Male. Face yellowish white, front shining green, antennae red, at 

 most the tip of the short third joint brownish. Thorax thinly brown- 

 ish dusted on the dorsum, shining; pleurae green with white dust. 

 Among the black cilia of the tegulae are sometimes one or two white 

 ones. Abdomen shining green above, white-dusted on the sides be- 

 low; hypopygium not very large, the lamellae somewhat triangular, 

 white, with wide black border along the upper and apical side, at the 

 tip jagged and provided with stout incurved bristles; the white disk of 

 the lamella is punctulate on the outer side. Coxae, femora and 

 tibiae wholly yellow, except that the middle coxa has on its outer side 

 two dark spots, one small and one large, hind tibiae on the inner side 

 glabrous for -3 its length, the tip glabrous behind. Hind and middle 

 tarsi infuscated from the tip of the first joint; first and second joints 

 of front tarsi stalk-like, yellow, third joint compressed, short, yellow, 

 the sides bare, with a white, satiny reflection; fourth joint longer than 

 third, still more compressed, black, the apical end white and not so 

 high; as far as the black extends there is along the upper edge a dense 

 fringe of black hairs; fifth joint on its lower edge about as long as the 

 fourth, greatly compressed, black, with a fringe above; on the end 

 just above the claws it is produced considerably and above this is ex- 

 cised in a sharp angle running half way to the base of the joint; above 

 this it is prolonged far beyond the lower lobe, turns up a little, and 

 ends in a broad, conspicuous snow-white tip. The black fringe along 

 the lop ends at the beginning of this white portion. Pulvilli yellowish 

 white, not conspicuous. Wings hyaline; second and third veins close 

 together and both turning back at the tip, the latter especially. 



