380 Tachinidae. 



species as this is at all events incliided in his lucorum (but I have got 

 specimens of gnava Meig. determined by Stein as lucorum Meig.). 



Geographical distribution: — Europe; it is not known north of 

 Denmark. It has been introduced to North America (if it is really 

 this species). 



3. G. laxifrons Villen. 



1912. Villen. La Feuille des jeun. Nat. V, 42, 90. — 1921. Baer, Zeitschr. 

 f. angew. Ent. VII, 146. — Parexorista lucorum B. B. 1891. Denkschr. Akad. 

 Wiss. Wien, LVIII, 322 et 1893. LX, 222. 



Of this species I possess only a rather bad male. The species is 

 similar to the others, but frons above about as broad as the eye. 

 Frontal bristles somewhat numerous, descending to insertion of 

 arista, those on the cheeks in the same distance from epistoma and 

 eye-margin. Antennal arista thickened in basal half . Vibrissæ ascending 

 about to the middle. Abdomen with small red side-spots, and with 

 some smaller or larger, irregular discai bristles besides the marginal 

 on third and fourth segment. Legs with tibiæ yellow or yellowish; 

 hind coxæ with small, bristly hairs behind, front tibiæ with two 

 posteroventral bristles and middle tibiæ with ventral bristle. Wings 

 somewhat browned at bage and anterior margin. Squamulæ a little 

 yellowish. 



Length 9 mm. 



This species is characterised by the broad frons and the relatively 

 high ascending vibrissæ. 



C. laxifrons seems to be very rare in Denmark, I know only one 

 specimen, a male, from Hald in Jutland; it is labelled as bred from 

 Dasychira fascelina, the host larva taken in June 1899 and the imago 

 developing on ^^/g 1900 (C. S. Larsen); otherwise no host is known. 



Geographical distribution: — Middle Europe, and also found 

 in Sweden (see remarks). 



Remarks: As noticed under gnava I have examined two of 

 Zetterstedt's types to excavata, and found one of them, a female, 

 to be laxifrons. 



4. C. rutilla B. B. (nec Rond.). 



1891. B. B. Denkschr. Akad. Wiss. Wien, LVIII, 320 (Parexorista). — 

 1912. Villen. La Feuille des jeun. Nat. V, 42, 89. — 1921. Baer, Zeitschr. f. 

 angew. Ent. VII, 145. — 1924. Stein, Arch. f. Naturg. 90, 6, 67, 9. — Tachina 

 fulva Meig. 1824. Syst. Beschr. IV, 399, 180 et 1838, VII, 256, 45 {Exorista). 



