Empididae. 7 



able Hilara but not fuscipes; Tachydromia nigripetmis \s Rhamphomyia 

 nigripennis (see below under this species), and Tachydromia melano- 

 cephala is Chelipoda melanocephala. — In spite of these results I liave 

 made no alterations in the names, and I think it is not advisable to 

 do so, as the old coUection of Tonder-Lund and Sehestedt has been 

 removed from the original cases, and even if there is some probability, 

 that the species are those examined by Fabricius, there is on the 

 other hånd no absolute certainty. I think it best to consider the 

 types to 7iigripes, flavipes and fuscipes as lost and in accordance 

 herevvith keep the names now in use. With regard to E. minuta this 

 never recognised species will have to be abolished, (see below under 

 Microphorus). — The five species Rh. tiigripes and nigripennis, Hil ara 

 fuscipes, Tachydromia flavipes and Chelipoda melanocephala were thus 

 originally established on Danish specimens. — Stæger records (Krøyer's 

 Tidsskr. IV, 1842, 98) Ocydromia glahricula and Leptopeza flavipes, 

 and Jacobsen (ibid. 211 and 315) records Rhamphomyia platyptera 

 (marginata) and Clinocera histigma (horealis). — Zetterstedt has (Dipt. 

 Scand. I and VIII) 70 species in all. As he does not mention Rham- 

 phomyia platyptera, nigripes , nigripennis , Hilara fuscipes, Leptopeza 

 flavipes and Clinocera histigma we thus get in all 76 Danish species 

 known in 1849. — Still there is a list given by Schiødte (Krøyer's 

 Tidsskr. II, 1838—39, 309) enumerating about 23 species, but nothing 

 new is added in it, and besides the determinations cannot be con- 

 sidered as defmite, the paper being chiefly an account of excursions; 

 one or two new species are mentioned, but they are nomina nuda 

 and must later have been recognised as described. — In the present 

 work 164 species are enumerated. 



Tahle of Subfamilies. 



1 . Anal cell absent or when present {Symballophthahnus, 

 Tachydromia) the anal vein at all events weak; in 

 the latter case the middle femora generally thick; no 



discai cell ; discai vein unt'orked 5. Tachydromiinae. 



— Anal cell present, rarely absent (Hemerodromia rap- 

 toria and oratoria) and then the front legs raptorial, 



the front coxæ almost as long as the thickened femora 2. 



2. Axillary lobe of the wing very small or wanting: 

 front coxæ more or less elongated, always longer 



than the posterior coxæ 4. Hemerodromiinae. 



— Axillary lobe of the wing generally large; front 



coxæ not elongated 3. 



3. Proboscis short, shorter than the head, when longer 

 directed straightly or obliquely forwards and then the 

 antennæ short and the style very short ; cubital vein 



