— 106 — 



Wiedemann's figure. It is singular that another specimen of this species 

 has never turned up in the United States; it would have allowed a more 

 thorough investigation than the fragile type in Vienna, which one is 

 afraid to handle."' 



My attention thus called to the subject, I have looked especially for 

 the species, during the few opportunities that I have had for collecting, 

 and a few days ago I was fortunate in finding it near Stamford, Connec- 

 ticut. During the hour that I was collecting I observed six individuals, 

 but only succeeded in capturing three of them, all males. I found them 

 running about rather nimbly on the upper leaves of underbush in a 

 small patch of partially shaded woods, in company with such species as 

 Melanostoma pla/ychirus, Xanthogramma flavipes, Sargus decorus, Ptec- 

 ticus Sackeni, etc The specimens all agree closely, and there can now 

 be no doubt but that we have, in this case at least, a true Leptid with the 

 normal number of but four posterior cells. As the species must require 

 a new generic name I propose to call it AGNOTOMYIA, in allusion to 

 the long period during which it has been unknown. My specimens dif- 

 fer but little from the descriptions given by Say and Wiedemann, but 

 that the species may be more readily recognized I again describe it as 

 I. illows: 



Agnotemyia elongata. 



Styg'va elongata Say, Jour. Acad. Phil., Ill, 41, 1; Compl. Wr., II, 58. 



Anthrax elongata Wiedemann, Auss. zweifl. Ins. I, 315. 



Lomatia elongata Wiedemann , Auss. zweifl. Ins., 1, 561; tab. II, rig. 6. 



Habitat. =Pennsylvania (Say), Connecticut! 



<~£. Length 7 to S mm. Eyes in life green. First two joints of antennae liglit 

 yellow, the second large, not elongate, third small, globular, and with the arista or 

 slender style, black. Dorsum of thorax shining black, sparsely white pubescent; the 

 humeri light colored and silvery pollinose, the dorsopleural suture obscurely luteous; 

 pleura on lower part elongated, yellowish, covered with silvery pollen; metanotum in 

 part lutescent. Abdomen shining black, the posterior angles of the first three seg- 

 ments rather broadly yeilow, continued across on the posterior margin of the segments, 

 uither narrowly in the middle; fmrth segment with the hind angles narrowly yel- 

 low. Wings distinctly pubescent and with a distinct blackish tinge; toward the base 

 and in marginal and submarginal cells yellowish. Coxae yellowish white, the legs 

 more yellow; the tip of hind femora, and the hind tibia:, blackish; tarsi black, the 

 middle metatarsi yellowish, the hind meiatarsi, except their tip, and the basal half of 

 the second joint, whitish. 



Say describes the wings as hyaline, and does not mention the dark 

 color of the hind legs, and speaks of the abdomen as being depressed. 

 Wiedemann also does not mention the black of the hind legs, but his de- 

 scription otherwise does not leave any doubt but that the species is the 

 same. Neither author gives the sex, but Wiedemann's figure shows that 

 the specimen was a male. The figure represents the species very well, 



