Ceromasia. 293 



Salten Langsø on ^/^o 1911 (Esben-Petersen). The species is known 

 bred from Lymantria monacha. 



Geographical distribution: — Europa; not known north of 

 Denmark. 



2. C. florum Rond. 



(1850. Macq. Ann. Soc. Ent. de Fr. 2, VIII, 460, 5, Tab. XIV, Fig. 3 

 {Masicera)). — 1861. Rond. Dipt. Ital. Prodr. IV, 30, 17. — 1889. B. B. Denk- 

 schr. Akad. Wiss. Wien, LVI, 89, Tab. II, Fig. 22 et 1891. LVIII, 330. — 1921. 

 Baer, Zeitschr. f. angew. Ent. VII, 1-55. — 1924. Stein, Arch. f. Naturgesch. 

 90, 6, 97, 8. — Masicera rutila Schin. (nec Meig.) 1862. F. A. I, 484. — - 1896. 

 Pand. Rev. Entom. XV, 54, 8 [Tachina). — 1907. Villen. Ann. Soc. Ent. de 

 Fr. LXXVI, 388 {Tachina). 



Of this species I know only the female. It is very similar to 

 jerruginea., but it is not brownish yellow but grey pruinose. Head 

 as in ferruginea, but frons still broader and more protruding, and 

 orbits grey. Frontal stripe brown. Frontal bristles descending below 

 insertion of arista, the two reclinate placed somewhat outwards, 

 beside the orbitals; below on orbits a couple of bristles outwards 

 to the frontals, Antennæ with basal joints red. Thorax and abdomen 

 as in jerruginea, only grey, not brownish yellow, and third and fourth 

 abdominal segment with only one pair of discai bristles. Legs as in 

 ferruginea with tibiæ obscurely reddish. Wings only slightly tinged, 

 and not or almost not yellow at base; apical cross-vein straight. 

 Squamulæ white. Halteres yellow. 



Length 8,5 mm. 



C. florum is very rare in Denmark, we have only one female 

 specimen from earlier time, without particular locality. 



Geographical distribution: — Europe; not kno^vn north of 

 Denmark. 



3. G. senilis Meig. 



1838. Meig. Syst. Besclir. VII, 241, 8 (Masicera)^ — 1861. Rond. Dipt. 

 Ital. Prodr. IV, 25, 10 {Masicera). — 1891. B. B. Denkschr. Akad. Wiss. Wien, 

 LVIII, 330 {Paraphorocera). — 1907. Kat. palåarkt. Dipt. III, 287. — 1921. 

 Baer, Zeitschr. f. angew. Ent. VII, 154. • — • Tachina agrestis Pand. p. p. Rev. 

 Entom. XV, 52, 5. — 1907. Villen. Ann. Soc. Ent. de Fr. LXXVI, 388. — 

 Leptotachina gratiosa B. B. 1891. 1. c. LVIII, 330. — 1907. Villen. Wien. Ent. 

 Zeitg. XXVI, 256, 46 et 1913 ibid. XXXII, 119, 2. — C. lepida 1924. Stein 

 (nec Meig.) Arch. f. Naturgesch. 90, 6, 95, 5. 



Male. Frons above broad, considerably broader than the eye, 

 rather protruding. Orbits plumbeous coloured; oheeks silvery, the 



