48 Psxjche [April 



coides of IVIeigen should be the type of the restricted Tachi/dromia. 

 Coquillett however has designated connexa as the type, forgetting that 

 part of Meigen's cimkoidcs belonged to Linnaeus' early species arro- 

 gans. This however will not invalidate the limitations of the restricted 

 Tachydromia, as arrogans and connexa are very closely related spe- 

 cies, certainly congeneric. 



The status of the old genus Tachydromia is therefore as follows. 



Front anil middle femora thickened: Division B. Meigen. 



Platypalpus Macquart, Westwood, Blanchard, Walker, Schiiier, Philipjii, 



Coquillett, Melander. 



Tachydromia Meigen, Burmeister, Zetterstedt, Berentlt, Scholtz. Bonsdorff, 



Loew, Bigot, Mik, Strobl, Becker, Kertesz, Bezzi, Frey. 



Phoroxypha Rondani, Coquillett. 

 Front femora thickened: Division A. Meigen. 



Anal cell imperfect Tachypeza Meigen, Loew. 



Anal cell completely wanting Tachydromia Meigen, Coquillett. 



Tachista Loew, Becker. 



The type species of these genera are as follows: 



Platypalpus. Type species cursitans Fabricius, indicated by Westwood in 

 1840. It is quite likely that Westwood had Meigen's original cursitans 

 in view, in which case the type should be major Zetterstedt. 



Tachypeza. Type species nubila Meigen. Rondani in 1856 designated 

 nervosa Meigen as the type, and this is a synonym of nubila. 



Tachydromia. Type species connexa Meigen. As explained before Meigen 

 indicated two species, cursitans and ciinicoides. As the type species should 

 be one of those originally listed by the describer elimination leaves cimi- 

 coides as the type, since Meigen's cursitans belongs to the subsequently 

 erected genus Platypalpus. Meigen's cimicoides included two species, 

 arrogans Linnaeus and the later described connexa Meigen, the second of 

 which Mr. Coquillett has designated as the type. 



During the last half century a number of other genera have been pro- 

 posed for new material rather than as constrictions of the older genus. 

 The relationships of these genera can be seen from the following 

 synopsis of the present subfamily Tachydromiinae. All the known 

 genera and sub-genera are included. 



