342 CATALOGUE OF NORTH AMERICAN DIPTERA. 



PLATYCNEMA. 



Zetterstedt, Dipt. Scand., i, 332, 1842. 

 ScHiNER, Fauna Austr., i, 242, 1862. 

 Vereall, British Flies, viii, 19, 1901. 

 ? imperfecta Loew (Cent., vi, 82. — D. C). On examining the type, at Mr. 

 Kahl's request, I found it to be a small Empid. 



The genus occurs in the United States, however, for Mr. Kahl had a 

 species, captured at Lawrence, Kans. 



PIPUNCULID^. 



Hough, Proc. Boston Soc. Nat. Hist., xxix, 77-86, 1899, paper containing table 



of genera. 

 Becker, Berl. Ent. Zeitsch., xLii, 25-100, 1897, has a revision of the European 



members of the family. 

 Verrall, British Flies, viii, 1901, contains a monograph of the British species. 



CHALARUS. 



Walker, Entomologist's Magazine, 11, 269, 1834. 



Macquart, Hist. Nat. Dipt, 11, 12, 1835 (Ateleneura). 



ScHiNER, Fauna Austr., i, 244, 1862. 



Becker, Berl. Ent. Zeitsch., xlii, 96, 1897. 



Verrall, British Flies, viii, 67, 1901. 

 spurius Fallen, Syrph., 16 (Cephalops).- — N. Europe. 



Meigen, Syst. Beschr., iv, 24 (Pipunculus) . 



Macquart, Hist. Nat. Dipt, 11, 12 (Ateleneura nigripes). 



ScHiNER, Fauna Austr., i, 245. 



Becker, Berl. Ent. Zeitsch., xlii, 96, bibliography, etc. 



GiARD, Compt. Rend. Acad. Sci. Paris, cix, records rearing the species 

 from Typhlocyba roscB, a leaf-hopper. 



Verrall, British Flies, viii, 68. 



N. J.— Smith Cat; White Mts., N. H.— Slosson. Mr. Kahl has com- 

 pared American with European specimens, and confirms the identity. 

 We also have an undescribed species. 



NEPHROCERUS. 



Zetterstedt, Ins. Lapp., 578, 1840; Dipt. Scand., iii, 946, 1844. 

 Becker, Berl. Ent Zeitsch., xlii, 47, 1897. 

 Verrall, British Flies, viii, yy, 1901. 

 daecki Johnson, Ent. News, xiv, 107. — Long Id., N. Y. 



Mr. Coquillett determined an undescribed species from the White Mts. 

 for Mrs. Slosson's list; Mr. Kahl also has reported the genus to me from 

 Kansas. 



PIPUNCULUS. 



Latreille, Hist. Nat. Crust et Ins., iii, 463, 1802; xiv, 393, 1804. 



Fallen, Syrphici, 14, 1816 (Cephalops). 



Macquart, Hist. Nat. Dipt., 11, 9, 1835. 



Zetterstedt, Dipt. Scand., iii, 949, 1844. 



Schiner, Fauna Austr., i, 245, 1862. 



Becker, Berl. Ent. Zeitsch., xlii, 35, 1897. 



