Mr. J. R. Mallocli on Exotic Muscaridne. 421 



A yellow species without black thoracic vittse and with 

 black marks on dorsum of abdomen similar to those of the 

 two preceding species. 



Dichotomy ia pectinipes (Stein) . 



I have seen one male from Peradeniya, Ceylon, which I 

 am certain belongs to this species. 



Dichcetomyia apicalis (Stein). 



One male from Cameroon, Africa, which I consider is 

 undoubtedly referable to this species. 



Dichcetomyia distcmti, sp. n. 



Male and female. — Shining rufous yellow. Frons fuscous ; 

 antenntB yellow, third segment brownish apically; palpi 

 yellow. Thorax indistinctly vittate, slightly whitish pruin- 

 escent. Abdomen with a large crescentic spot on apical 

 half of third tergite and all of fourth tergite black. Legs 

 yellow. Wings clear. Calyptrae and halteres yellow. 



Mule. — Eyes almost bare; head-structure normal. Thorax 

 with 2 + 3 strong dorso-centrals ; prealar short; anterior 

 intra-alar long; scutellum bare below ; prosternal and ptero- 

 pleural hairs yellow. Basal sternite hairy. Fore tibia with 

 a posterior bristle ; raid-tibia with two posterior bristles ; 

 hind femur "with two or three preapical antero-ventral 

 bristles and some fine bristles on apical third of posterc- 

 ventral surface. Fourth vein very slightly curved forward 

 at apex. 



Female. — Frons not over one-third of the head-width. 

 Hind femur without fine bristles on apical part of postero- 

 ventral surface; hind tibia as in male, with one antero- 

 dorsal and one or two antero-ventral bristles and a postero- 

 dorsal setula at middle. 



Length 7 mm. 



Type., male, and allotype, Johannesburg, South Africa, 

 vi. 1901 {W. L. Distant). 



Dichcetomyia fuscitibia (Stein). 



The tarsi and usually a part of tibiffl in this species are 

 blackened. 



I have before me seven specimens from Obuasi, Ashanti 

 {Dr. W. M. Graham). 



