Vol. X] VAN DU ZEE— NEW SPECIES OF DOLICHOPODIDM 49 



3. Gymnopternus convergens, new species 



Male : Length, 3 mm. Face wide, covered with dark brown, almost 

 black, pollen. Front greenish black. Antennae black, third joint longer than 

 wide, somewhat oval, the arista inserted above the tip; orbital cilia wholly 

 black. 



Thorax and abdomen very dark green, shining, the latter with slight 

 bronze reflections. Hypopygium and its lamellae black, the latter crescent 

 shaped, fringed with brown hairs on outer edge. 



Legs and feet black, the fore and middle tibiae more brownish ; middle 

 and hind femora each with two preapical bristles ; middle tibiae with two 

 small bristles below and about six rather short ones above. Calypters and 

 halteres brownish yellow ; the latter with yellow knobs and the former with 

 black cilia. 



Wings tinged with brownish gray; third and fourth veins convergent 

 towards their tips, which are rather close together; anal angle of wing 

 rather prominent, the base of the wing being at right angles to the costal 

 line; wing widest about half way from tip of fifth to tip of sixth vein, the 

 hind margin being somewhat flattened from that point to the anal angle. 



Female : Color and form of wing about as in the male, but the anal 

 angle of the wing is a little less prominent. The middle and hind femora 

 have each two preapical bristles as in the male ; the face is a little wider 

 and perhaps a little more grayish. 



Described from four males and five females taken by the 

 writer at Wells, Nevada, June 6, 1915. 



Holotype and allotype in the author's collection. Paratypes 

 in the collection of the author and in that of the California 

 Academy of Sciences (No. 733). 



