ALDRICH : DOLICHOPUS AND HYGROCELEUTHUS. II 



Dolichopus splendidus Loew. 



Numerous specimens, Brooking, S. D., and four from Michigan; 

 June 3, lo, 12, 15. The female Loew mentions in connection with 

 this species undoubtedly belongs to it, as several of mine have the tip 

 of the hind tibia with a trace of brown. One of the commonest 

 northern species. 



Dolchopus dakotensis, n. sp. 



Cilia of inferior orbit and tegulae pale, antennae black, posterior 

 tarsi yellow to a considerable extent, male fore tarsi with three joints 

 enlarged, the third and fourth white. 



Male. Face narrow, yellow; antenn?e wholly black; front green; 

 thorax green, moderately shining; pleurae green, rather thickly dusted. 

 Abdomen green, shining, the first segment on each side with a few long, 

 pale hairs; lamellae of hypopygium rounded, whitish, narrowly mar- 

 gined, jagged, and with black bristles. Fore coxae yellow, near the 

 apex with a few black hairs and bristles, the remainder of the surface 

 in front with a few microscopic white hairs, otherwise bare. Middle 

 and hind coxs black with yellow tips. Femora, tibiae and proximal 

 half of tarsi all yellow; hind femora with short, sparse, and delicate 

 whitish cilia beneath; hind femora with the usual bristles behind, and 

 a row of hairs down the front side; on the inner side below with a 

 cluster of hairs. Fore tarsi double the length of the tibiae; the figure 

 gives a good idea of the structure, but does not bring out the third 

 joint white enough. The outer side of the fifth joint has a satiny 

 reflection. Wings hyaline, with yellow veins; costa thickened for a 

 considerable distance before and beyond the first vein. 



Female. Face wider; fore coxae with delicate, sparse, bl a ^'; hairs 

 on fore side; fore tarsi one and one-third times the length of the tibial, 

 the infuscation perceptible from the tip of the first joint in all the 

 tarsi. 



Length, 5.5 mm.; of wing, 5.1 mm. 



Twelve males and one female, Brookings, S. D. Several were 

 captured on June 16. 



Dolichopus edactylus Loew. 



A male and a female, Douglas Co., Kans. (U. K.), June 17 and 24. 

 The female has the tegular cilia mixed with black, particularly on 

 one side. 



Dolichopus variabilis Loew. 



Four males and four females; Mass. (U. K.), Pa. and N. J. ( f >'in 

 son), Custer, S. D.; June 27, July i, August 4, 7, 14. 20. Taj hind 

 tarsi vary in color as mentioned by Loew. 



