ZooL.— Vol. II.] WHEELER—DOLlCHOPODlDAi. 73 



Two female specimens, one from Grant Falls, Maryland, 

 taken May i8th (University of Kansas), and one from 

 Dover, N. J., taken in June (Mr. C. W. Johnson). I have 

 also taken a single female specimen during June, 1898, at 

 Riverside, 111. 



The species resembles N . rubella Loew, but lacks the 

 black prescutellar spot and black abdominal fasciae of that 

 species. 



73. Neurigona superbiens Loew. 



This species appears to be the same as Dactylomyia grac- 

 ilifes Aldrich.^ This latter species, specimens of which I 

 have received from Professor Aldrich and also collected on 

 the bark of trees in the Chicago parks during June and 

 July, is the same as some specimens taken by me at Wood's 

 Hole, Mass., some years ago, and labelled in my collection 

 ^' Saucropus superbiens Loew." The coloration of the abdo- 

 men is very variable. Professor Aldrich may be justified 

 in establishing a new genus, but the characters do not seem 

 to me to be of sufficient value. Until our North American 

 species of Neurigona are better known I propose to retain 

 the species in the old genus. 



74. Neurigona lienosa, sp. no v. 



Female. Length 4.75 mm.; length of wing 3.75 mm. Proboscis yellow, 

 palpi and face yellow covered with silvery white dust, the latter of the usual 

 breadth for the female. Antennae yellow, the small third joint with a blunt 

 point and covered with dark pubescence; arista distinctly pubescent. Front 

 and occiput metallic green, thickly covered with white dust. Postocular cilia 

 snow-white. Thorax dull metallic green, the ground-color almost hidden 

 under a thick coating of brown dust. Dorsal bristles prominent along the 

 anterior border of the thorax. Scutellum slightly brighter metallic green 

 than the thorax, but also with a covering of dust. The scutellum bears two 

 strong mesial and two weak lateral bristles. First abdominal segment dark 

 brown, succeeding segments black dusted with white, posterior edges of 

 second, third and fourth segments and venter yellow. Ovipositor yellow at 

 the base, tip black with delicate hairs. Pleurae blackish metallic green, thickly 

 covered with white dust. Metathoracic epimera dark brown. Coxae yellow, 



iKans. Univ. Quarterly. Vol. II, No. 3, 1894, pp. T51-152. 



