Chaetoneurophora. 97 



the end of the first third and one at apex; all bristles rather strong. 

 Wings somewhat yellowish tinged, veins brownish; costa reaching 

 considerably beyond the middle, a little strenger than in fennica^ 

 1 slightly longer than 2 + 3 ; fork acute ; costal cilia short, but stronger 

 than in fennica; fourth vein issuing behind the base of the fork, 



Fig. 38. Wing of Ch. curvinervis ^ . 



considerably curved in its first part, the following veins a little ab- 

 breviated, not quite reaching the margin. Balteres black. 



Female. I possess only one immature female; according to 

 Becker this sex is similar to the male, but sometimes paler with 

 palpi and legs reddish yellow to reddish brown. 



Length about 3 to about 4 mm. 



In Stæger's collection there is an old, very mouldy specimen, 

 labelled "fuscipes Macq? Zett. det.", it is a curvinervis and it is 

 evidently the specimen mentioned by Zetterstedt 1. c. as taken by 

 Stæger at Copenhagen on ^Vs; Zetterstedt writes "??", but the spec- 

 imen is a male. 



Ch. curvinervis seems to be rare in Denmark, I know only five 

 specimens, the above mentioned old male from near Copenhagen 

 on ^^/s (Stæger), two males taken in Ermelund on ^^U 1909 and ^"/s 

 1920 (the author), one male from Hillerød ^^U 1921 (Th. Mortensen), 

 and one immature female taken at Holte ^^U 1916 in a fox's den 

 (Rosenberg). 



Geographical distribution: — The species is otherwise known 

 from England, Holland and Germany and, according to Brues ( Journ. 

 New York Ent. Soc. 16, 1908, 200), also from North America. 



3. Ch. thoracica Meig. 



1804. Meig. Klass. eur. zweifl. Ins. I, 313, 2 {Trineura). — 1823. Fall. 

 Dipt. Suec. Phytom. 6, 3 {Trineura). — 1830. Meig. Syst. Beschr. VI, 214, 8 

 (Phora). — 1848. Zett. Dipt. Scand. VII, 2852, 1 {Trineura). - 1864. Schin. 



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