420 Mr. J. R. Mallocli on Exotic Muscaridge. 



been forced to admit a large number of species from the 

 African and Oriental regions which have always more than 

 two strong postsutural dorso-centrals behind the suture. 



The presence of hairs on the sides of the prosternum and 

 on the pteropleura, some weak setulae on base of third wing- 

 vein on lower surface, and the forward curvature of the 

 fourth vein apically distinguish the genus from its allies. 

 The hind tibia has no calcar, but there are at times some 

 short setulse on the postero-dorsal surface. The hypopleura 

 is either bare or there are some hairs near the lower posterior 

 angle, and in a few cases there aie some very short hairs on 

 the latero-posterior declivous portion of the mesonotum in 

 front of scutellum. 



Dichatomyia polita, Malloch. 



This species varies very strikingly in colour sometimes, 

 being at times almost entirely glossy black, and in several 

 examples before me yellowish testaceous with a distinctly 

 vittate thorax and the apical half of abdomen blackened. 



I have before me a good series taken at Obuasi, Ashanti 

 {Dr. W. M. Graham) . 



Dichcetomyia bifasciata (Stein). 



Like all the species except the genotype this one was 

 originally placed in Mydaa by its describer. 



1 have before me a male of this species wliicb bears the 

 written label ^^ Arid a bivittata, Walker, MS.,"" and another 

 label, presumably in the handwriting of Walker, with the 

 name '"'■bivittata" 



Locality, New Guinea. 



Dichcetomyia niveipalpis (Stein). 



A very distinct species, which is readily recognized, at 

 least in the female, by the large, flattened, whitish palpi. 

 The species has somewhat similar coloration to bifasciata, 

 the thorax being brown vittate, but the abdomen is largely 

 blackened on dorsum. 



One specimen from Talum, Siam {H. C. Robinson and 

 N. Annandale). 



Dichatomyia fasciculigera (Stein) . 



I have before me four specimens from the Seychelles 

 Islands, Sans Souci, 3. ii. 1906 {P. R. Dupont). 



