D6 SYRPHID&. 
pentaspila are synonyms corresponding to the two usual forms of 
the male and female. To these three species is to be added Paragus 
signatus, Walker, from Durban, and perhaps also Wicrodon varius, 
Walker, from Sierra Leone. From the Oriental Region no less than 
nineteen species have been described by Osten Sacken, Brunetti and 
de Meijere. The genus seems therefore to be mainly Oriental, but 
Africa possesses some very interesting species, provided with very 
pecular structural characters. All these species seem to mimic the 
hymenopterous genus Melipona, which they resemble very much 
i shape, colouring, and structure of the legs; probably they are 
scavengers in their habits, as are our species oe Volucella. 
In the collection there are the four following species :— 
(2) Second and fourth longitudinal veins bearing 
from the base to the middle very numerous 
and long bristles ; basal joint of middle 
tarsiin the male not dilated and as long 
as the four succeeding joints; seutellum 
with a yellow margin and a broad black 
depression ; legs with black markings ; 
wings with three narrow dark bands.... triangulifera, Big. 
The second vein alone with bristles near 
the base; species usually of larger 510% 
wings with broad brown spots or Y bands. 
3 (4) Legs usually of a pale yellow colour, with- 
out any black marking ; ecutellum with 
a very broad black depression, apparently 
black with a-yellow berder; abdomen 
yellow, with black markings ; : basal joint 
of middle tarsi us long as the others taken 
POS CEDON ace sal shay ais Re Fe Le avanthopoda, sp. n. 
4 (3) Legs with black markings on the fontoxa 
and ti bie; scutellum yellow, with a 
small central black depression; basal 
joint of middle tarsi short, and that of 
the male dilated, only as Jong as the 
next joint; abdomen black, with yellow 
markings, 
5 (G) Scutellum entirely of a reddish colour, the 
median depression alone black; thorax 
and abdomen with golden tomentum and 
golden ha@irs( 1.0. Rao} ALLOY. dL Vinina@uced, sp. n- 
6 (5) Sentellum yellow, with the basal half 
black; thorax without golden tomentum 
or Polder hairs. cha oueaag.: Gruss svn. Ghd, Sp: N. 
ho 
art 
ay, 
50. Graptomyza triangulifera, Bigot (1882). 
A small species, readily recognised by the fourth longitudinal 
vein being bristly towards the base and by the peculiar abdominal 
pattern. 
The male measures 5-6 mm. in length and was described by me 
as melanura ; the female measures 6—7 7a , and was described by 
me as pentaspila, JT am enabled to substantiate this synonymy 
