ABT. 6 NOTES ON ORIENTAL, SAPROMYZED FLIES MALLOCH 19 



ticals short, and the arista short haired. Thorax with three pairs 

 of postsutural dorsocentral bristles and one sternopleural. Legs 

 rather long, fore and mid femora very much attenuated apically, the 

 former with an anteroventral comb, fore and mid tibiae and tarsi 

 slender, the preapical dorsal bristle distinct only on the hind tibiae. 

 The genus is monobasic. 



PROSOPOPHORELLA BUCCATA (de Meijere) 



Prosopophora hnccata db Meijeke, Tijdschr. v. Ent., vol. 53, p. 144, 1910. 



Male.—RQdidi testaceous. Thorax black, shining, pleura brownish 

 and with some patches of whitish dust. Abdomen shining black. 

 Legs testaceous. Wings tf uscous, with the following hyaline marks : 

 An almost complete fascia proximad of the inner cross vein, a short 

 fascia from costa to fourth vein proximad of outer cross vein, a 

 quadrate mark at middle of first posterior cell, and another just 

 proximad o»f it in second posterior cell, a mark over outer cross vein, 

 and one at wing tip. 



Length, 4.5 mm. 



Habitat, Nederland Indies. 



Genus PACHYCERINA Macquart 



The characters cited by Hendel in his recently published key to 

 the genera for the separation of this genus from Physogenia Mac- 

 quart consist of the position of the anterior pair of orbitals, more 

 closely placed than posterior pair in Physogenia and equally widely 

 separated in Pachycerina, the differently haired aristae, shortly and 

 densely haired in Pachycerina and longer and more sparsely haired 

 in Physogenia, with slight differences in the form of face and occiput. 

 Only the first mentioned character appears to be of any use for dis- 

 tinguishing the genera as represented in the species before me. The 

 only species of Physogenia which I have available now is ferruginea 

 Schiner, and in the male of it the mid tarsus has the basal segment 

 thickened, which is not the case in any of the species of Pachycerina 

 available to me now. In my paper on Sumatran Sapromyzidae, 

 which has already been referred to, I separated leucocha£ta de 

 Meijere from the other species previously included in this genus, 

 erecting the genus Melano'pachycerina for it and two other species. 

 Doctor Frey retained this species in Pachycerina, but he also retained 

 Steganopsis minor (de Meijere) in the genus so that he did not ap- 

 parently have a very clear concept of the generic characters. 



I can not determine to what genus Pa^hyceHna cyaneostoma Frey 

 belongs, but am doubtful if it belongs here. The following key will 

 serve to distinguish the species of the genus now known to me from 

 the Orient. 



