158 KANSAS UNIVERSITY SCIENCE BULLETIN. 



opposite apex of second basal cell, costa reaches tip of fourth 

 vein. Length, 2 mm. 



Four males and six females ; April, May, and June. 



Platypalpus. 



(Macquart, Dipt, du Nord de France, 94; 1827.) 



Platypalpus univittatus. 



Platypalpus univittatus Loew, Dipteren-Fauna Siidafrika's, (341) 269. 



One damaged specimen in the collection agrees partially with 

 Loew's description. The last two joints of the antennae and a 

 part of the wings are gone, and its certain identification is im- 

 possible. The proboscis and a spot above the middle coxae are 

 black. 



Empis. 



(Linne, Fauna Suecica ; 1763.) 



Empis validis, n. sp. 



Male : Black, subshining. Face bare, shining, occiput and 

 cheeks thinly gray pollinose, eyes contiguous above antenna*, 

 antenni;e black, third joint tapering, style nearly half as long as 

 third joint, proboscis shining black, twice as long as height of 

 head. Thorax uniformly subshining, a sprinkling of gray pol- 

 len on pleuriP ; bristles longest along sides of mesonotum, black ; 

 halteres yellowish at base, knobs brown. Abdomen a little 

 more shining than the thorax, pile black ; hypopygium small, 

 concealed in the last ventral segment. Legs black, mostly 

 shining ; basal half of all tibia^ yellow ; front and hind meta- 

 tarsi somewhat incrassate, the intermediate ones of usual size; 

 pile and bristles black, pulvilli yellow. Wings hyaline, veins 

 light brown ; in venation somewhat similar to the figure for 

 E. 'perpendicular is Loew, differing by having the anterior branch 

 of third vein straight, and forming with it a right angle, the 

 discal cell is a little shorter, and the vein between the second 

 and third posterior cells is nearer to the fourth vein. Length, 

 3.25 ram. 



One specimen ; April. 



