Anachaetopsis. • 367 



Behind postociilar bristles black hairs. Frontal bristles descending 

 to insertion of arista, two iippermost reclinate. Gheeks bare. Vibrissæ 

 ascending, reaching to the frontal bristles. Eyes bare. Epistoma a 

 little retreating. Proboscis short. Palpi dilated outwards. Antennæ 

 inserted above middle of the eye, third joint aboiit foiir times as long 

 as second; arista slightly pubescent, second joint very slightly elong- 

 ated. Thorax qiiadratic; three postsiitiiral dorsocentrals, and about 

 three præ- and three postsutural acrostichals, the anterior in both 

 divisions small; a præsutural intraalar bristle. Scutellum with three 

 marginal bristles on each side, and quite small apical hairs. Three 

 sternopleural bristles. Pteropleura with a small bristle above. Abdomen 

 conical in male, shorter and ovate in female; excavation on second 

 segment not reaching hind margin. There are discai and marginal 

 bristles, on second segment a pair of marginal. Legs with anterodorsal 

 bristles on hind tibiæ imequal; claws and piilvilli not elongated in 

 male. Wings with first posterior cell medium long petiolate, the 

 peduncle ending a little before apex of wing; discai angle obtiise; 

 a small costal spine. 



Of the species ocypterina is parasitic on Pterophorus. 



Two European species are known, one occurring in Denmark. 



1. A. ocypterina Zett. 



1838. Zett. Ins. Lapp. 639, 25 et 1844. Dipt. Scand. III, 1077, 74 {Tachina). 

 — 1862. Schin. F. A. I, 539 {Scofolia). — 1889. B. B. Denkschr. Acad. Wiss. 

 Wien, LVI, 106, Tab. V, Fig. 102. — 1896. Pand. Rev. Entom. XV, 119, 2 

 (Erynnia). — 1907. Kat. palåarkt. Dipt. III, 373. — 1921. Baer, Zeitschr. f. 

 angew. Ent. VII, 366. — 1924. Stein, Arch. f. Naturgesch. 90, 6, 123. 



Male. Frons above about as broad as the eye, practically not 

 protruding. Orbits greyish, black upwards; cheeks and jowls whitish; 

 frontal stripe velvet black, The uppermost of the two reclinate frontal 

 bristles small. Orbits and jowls sparingly with black hairs. Occiput 

 grey, with whitish hairs below and black hairs behind postocular 

 bristles. Antennæ black; arista thickened in basal half. Palpi 

 blackish. Thorax black, shining, a little whitish pruinose in front, 

 especially on humeri, and there is quite in front a beginning of four 

 stripes, the median narrow. Thorax thinly black-haired; scutellar 

 subapical bristles strong and diverging. Abdomen black, shining, 

 with black hairs; on second segment a pair of marginal bristles, 

 on third a pair of discai and marginal and on fourth a row of discai 

 and marginal. Legs black. Wings slightly tinged; veins blackish. 

 Squamulæ yellowish. H alteres yellow. 



