4 
Psyche 
[February 
NEW NEMESTRINIDtE (DIPTERA) FROM RHODESIA 
AND NEW GUINEA 
By J. Bequaert. 
Department of Tropical Medicine, Harvard University Medical 
School. 
The curious and apparently archaic family Nemestrinidae is 
rather abundantly represented in South Africa, but very few 
species are known north of the Orange and Limpopo Rivers. 
It is, therefore, of much interest to record three new forms, of 
the genera Prosceca and Stenobasipteron, which have been re- 
cently discovered in Southern Rhodesia. I wish to thank Dr. 
G. Arnold, Curator of the Rhodesia Museum, Bulawayo, for 
the opportunity of studying these insects. 
. On this occasion I shall also describe a new species of 
A yct°rimyia, from New Guinea, entrusted to me some time ago 
by the Paris Museum. 
Prosoeca rhodesiensis sp. nov. 
Type female from Matopos, Southern Rhodesia, April 17, 
1923 (R. Stevenson Coll.); allotype male from Mt. Bambata, 
Matopos, Southern Rhodesia, March 23, 1924 (without collector.) 
Both in the collection of the Rhodesia Museum, Bulawayo. 
A robust, black species, covered with dull grey tomentum; 
vertex and dorsum of thorax with short black hair; pilosity 
otherwise greyish white, very long and dense on the under side; 
a dorsal row of brownish black, dull spots on the middle of ab- 
domen; legs dark clove brown. Wings of normal shape in the 
male, with all longitudinal veins turned up at apex; brownish 
along costa and gradually fading into the hyaline hind margin. 
Female : Integument black, faintly clove brown at extreme 
lower apex of face. Antennae, palpi, and proboscis black; the 
proboscis faintly clove brown toward the base. Legs very dark 
clove brown, the tarsi and claws almost black. 
Body short pilose above, densely hairy on the ventral side. 
Vertex with erect, black hairs as far as the anterior ocellus; the 
remainder of the head with white pile, which is extremely short 
