5k SYRPHID ®. 
(S. A. Neave); a female from Chirinda Forest, Melsetter District, 
S. Rhodesia, x. 1905 (G. A. A. Marshall); two males and a female 
from the oe locality, 3,800 ft., 3-20. iv. 1910, “ very common in 
house” (C.F. A. Swynnerton). 
48. Rhingia cerulescens, Loci (1858). 
A pretty violaceous or neous species, with reddish snout and 
wholly metallic, not banded, abdomen, which is more or less broadly 
ye ‘ow towards the base. 
The present species is of the same size as the preceding one, but 
very different in coloration. The yellow on the base of the 
abdomen is very variable; some specimens have only the first 
segment and a median spot on the second segment yellow ; some 
others have the second segment vellow, except on the sides, and 
the third with a more or less broad yellow median spot. Basal 
black streak on the front tarst very distinct. 
This species, like the preceding one, in whose company it is 
often found, seems to be very common. <A female from Marsabit, 
British Kast Africa, 23.ix.1911 (2. J. Stordy) ; Chirinda Forest, 
S. Rhodesia (G. A. K. pe and CL. fA. Swynnerton) ; 
Zomba, Nyasaland (Dr. H. S. Stannus); Lualaba River, Belgian 
Congo, 1910 (Dr. A. Yale Massey); a male from Western 
Ankole, Uganda Protectorate, 4,500-5,000 ft., 12 14. x. 1911 (CS. 
Ax eR 
Var. fuscipes, var. n. 
é 9. Length of body 11 mm. 
Distinguished from the typieal form by its slightly greater size, 
and by having all the femora more or less dark brown or black, with 
only the apex yellow; sometimes the hind tibie also are blackish 
in the middle and all ae tarsi darkened towards the end. 
Type 3 and type 2 from Chirinda Forest, 8. Rhodesia, 3,800 ft., 
3.1v.1910 (C. #. AL. Swynnerton) ; a male eo N.-E. Rhodesia, 
near UR. Chire, 17.11.1909 (Dr. J. B. Davey); a female from 
N. Nyasa, Mt. Waller, 1.1x. 1909 (Dr. J. B. ane. 
49. Rhingia pycnosoma, sp. n. 
3. Length of body 10°5 mm. 
A wholly shining cxruleous species, resembling a Pyenosoma, 
very distinct from. any other on account of its ceruleous frontal 
triangle, face, and snout. 
This species seems to be closely allied to cyanoprora, Speiser, 
and pulcherrima, Bezzi, but differs from both in the coloration 
of the legs, and from the former in the thorax being all czruleous 
without yellow markings. 2. cerulea, recently described by me, 
is perhaps the female of the present species, but has a yellow face 
and snout, 
