Tachinidae. 55 



name given by Fabricius (see under the species). Zetterstedt enumer- 

 ates in Dipt. Scand. III and IV about 76 species, and in VIII still 18 

 species and in XII a single one from Denmark, thus in all about 

 100 species, of which to be sure some few must be struck out as 

 synonyms. Macquart describes in 1854 in Ann. Soc. Ent. de Fr. 3, II, 

 746 a Zophomyia rufipalpis from Denmark; it seems to be Macquartia 

 tenebricosa Meig. In Nielsen's papers on the biology 1909 — 1918 

 sixteen species hitherto not recorded are mentioned, two of them 

 new {Panzeria Nielseni Villen. and Digonochaeta enigmatica Villen. 

 and Niels.), and fmally Villeneuve has in 1919 and 1921 published 

 two new species, Actia nigrohalterata and Zenillia Bottcheri as occurring 

 in Denmark. 



After the above the species at present recorded from Denmark 

 are somewhat above 100. In the present work 273 are enumerated. 



At this place I must beg to offer my most sincere thanks to 

 Dr. J. Villeneuve in Rambouillet, the eminent speciahst in palæ- 

 arctic Tachinids ; Dr. Villeneuve has kindly yielded me very valuable 

 aid as well by material ana determinations as by giving me numerous 

 important hints and Communications. 



Table of Subfamilies. 



1. A ventral membrane present and more or less visible 

 between sternites and lateral margins of tergites; if 

 not, abdomen very long, narrow and cylindrical and 

 the transverse suture on thorax placed in the middle 

 {Ocyptera), or squamulæ very large and abdomen in 

 female ending with a forceps {Leucostoma) ; the species 

 either pilose, quite without bristles, or not pilose with 

 generally relatively few, often weak bristles 2. 



— No ventral membrane present; abdomen not very 

 long and cylindrical; squamulæ not extremely large; 

 bristles always more or less well developed 5. 



2. Mouth parts wanting or quite rudimentary; hypo- 

 pleura bare or with a bundle or fan of pale hairs; 

 no sternopleural bristles; mostly densely pilose 



species and quite without bristles 3. 



• — Mouth parts developed; hypopleural and nearly 

 always sternopleural bristles present; squamulæ 

 generally broad and often very large. Not pilose 



