278 Tachinidae. 



— Four postsutural dorsocentral bristles; exca vation on 

 second abdominal segment reaching hind margin; 11^ — 

 13,5 mm 2. ferina. 



1. M. carinifrons Fall. 



1816. Fall. Vet. Acad. Handl. 243, 15 et 1822. Dipt. Suec. Muse. 44, 15 

 {Musca). — 1838. Zett. Ins. Lapp. 653, 4 {Musca) et 1844. Dipt. Scand. III, 

 1270, 7 et 1855. XII, 4708, 7 (Dexia). — 1862. Schin. F. A. I, 559 {Dexia). — 

 1896. Pand. Eev. Entom. XV, 159, 8 (Dexia). — 1907. Kat. palåarkt. Dipt. 

 III, 450. — 1921. Baer, Zeitschr. f. angew. Ent. VII, 381. — 1924. Stein, Arch. 

 f. Naturgescli., 90, 6, 240, 1. 



Male. Frons above about one third of the eye, widening down- 

 wards, well protruding; head about as long as high; cheeks very 

 broad and jowls about two thirds of the height of the eye. Head 

 silvery grey pruinose, shifting to dark above; jowls red in some 

 views; frontal stripe velvet black. Orbits with some very fine hairs; 

 jowls black-haired below. Occiput grey, with yellow hairs, and black 

 hairs behind the postocular bristles. Antennæ black, obscurely 

 reddish at base; third joint about thrice as long as second; arista 

 thickened at base. Palpi yellowish or brownish, blackish at apex. 

 Thorax blackish, grey pruinose, with three dark stripes, the median 

 broad, continued about to scutellum, somewhat divided into three, 

 especially before the suture; the lateral narrower than the median, 

 interrupted at the suture. Thorax black-haired; three postsutural 

 dorsocentrals and generally two anterior præ- and two posterior 

 postsutural acrostichals ; two intraalar bristles. Scutellum some- 

 times with a small lateral bristle besides the other three; the apical 

 crossing. Abdomen all greyish yellow pruinose, shifting with various 

 smaller or larger dark brown spots according to view; especially a 

 pair of triangular brown spots are visible on third and fourth segment 

 in certain views; excavation on second segment not reaching hind 

 margin. Abdomen is black-haired with marginal bristles, on second 

 segment a pair, on third generally four and on fourth and fifth a row. 

 Fifth sternite cleft to near base. Legs black. Wings more or less 

 brownish tinged; veins blackish brown. Squamulæ whitish or whitish 

 yellow with darker margin. H alteres yellow. 



Female. Similar, frons broad, much broader than the eye. 



Length 7,5 to about 10 mm. 



M. carinifrons is somewhat common in Denmark; Lersøen, 

 Ordrup, Dyrehaven, Hillerød, Ringsted, Allindelille, Bromme Plan- 



