MICRODON. 125 
from the vertex and distant from each other; face twice as broad 
as the frons; jowls with a small circular pit on each side. Meta- 
notum shining black, bare ; squamule and halteres pale yellowish. 
Margins ot abdominal segments distinct; genitalia black, clothed 
with white hair. Small cross-vein close to the base of the discal 
cell, almost in the same line as the ecross-vein forming the distal 
boundary of the second basal cell; subapical and discal cells short, 
the lower corner of the former bearing an appendix. 
A single male specimen from Uganda, Plains N.E. of Lake 
Edward, 3,200 feet, “in open,” 15-16.x.1911 (8. A. Neave). 
The type of the species was obtained in Belgian Congo. 
Grove LV. (gunctulatus, W7ed.). 
The species belonging to this group are distinguishable from 
those of the following one by their smailer size and the cylindrical 
shape of body, the abdomen being not broader than the thorax and 
having the second segment depressed in the middle, and elevated 
and produced at the sides, rather like that of Omegasyrphus, but 
to a less extent. They also have a more strongly punctate body, 
the first joint of the hind tarsi greatly swollen, and are duller in 
colour, being blackish brown and dark reddish. The ocelli and 
legs show the same characters as in the following group, and the 
subapical and discal cells have their lower corners broadly rounded 
and without an appendix. 
In the collection there are two species, the first of which I 
believe to be Wiedemann’s species. The recently described 
M. tarsalis, Hervé-Bazin (1913), has the first joint of the hind 
tarsi similarly shaped, but cannot be placed in the present group on 
account of its bispinose seutellum. On the other hand, eremasto- 
gastri, apis, and captum, Speziser (1913), belong here, while 
varius, Walker, is probably a Graptomyza: 
1 (2) Third antennal joint black; wings strongly 
infuseated ; abdomen in great part black; 
Meme eh MAES, cre Ot oieia ndn acca o ate punctulatus, Wied. 
2 (1) Third antennal joint red like the others ; 
wings greyish hyaline; abdomen in great 
part reddish; slender specizs 9 mm. in 
Lémorthis stay’ sf. MSTA: yet. babe thease) sits rugosus, Sp. N, 
133. Microdon punctulatus, Wiedemann (1824). 
A male specimen from Durban, Natal (J. P. Cregoe), which I 
assume to belong to this species, as it answers well enough to the 
description, although Wiedemann gives a smaller size. In this 
specimen the frons is of a dark reddish colour, like the face; the 
third antennal joint alone is black; thorax on the sides of the 
dorsum and pleure above, as far as the seutellum, reddish; the 
second segment of the abdomen on each side, and the distal 
