KEPOKT ON ECONOMIC ENTOMOLOGY 210 
A dark variety of (t. morsifaiis was taken by Major G. Dansey Browning, E.A.M.C., on 
the road between Sultan Keango’s village and Kossinga village in the Bahr-Pll-Ghazal 
Province during the winter of 1905-6. The following is his description' of this variety :— 
“ The fly is a dusky black glossina soinewdiat similar in size and colour to G. palpalis 
but differing markedly from that species as regards the coloration of the tarsi, these 
being specifically identical with the tarsi of (t. iiiorsilaun. The posterior surface of the 
head is dusky black, not dusky grey as in G. nwrail-it.Hs. The thorax and pleune are 
distinctly dusky black, not dusky grey. Tlio abdomen is markedly darker than in 
(1. morsitans, particularly as regards the second segment. On this the pale area found in 
(!. iiKn-sitans is replaced by a peculiar dusky area with irregular black confluent blotches 
on a dark ochraceous background. The abdominal bands are generally deeper than in 
G. mnrxitrmg, and the hind margins of the segments are narrower and generally more 
dusky in appearance. In other respects similar to G. morsitans.” 
III. Insects causing Myiasis 
The Tumbu Fly 
('ordylohia aiUhrojiojiliat/a, Grunberg 
Some flies in the Laboratory collection sent from the Southern Sudan—believed from 
the Bahr-El-Ghazal—have been identified by Mr. Austen as tlie so called Tumlm Fly — 
Gordylobia (mthropophaya. 
As Mr. Austen’s detailed description’- of the larva, puparium 
and adult of this pest may not be easily accessible to many 
who may meet with subcutaneous parasitic larvie in the Sudan, 
it is here given in full, together with his notes on the differences 
that enable one to readily distinguish between 6'. authropophaya 
and the Gonyo Floor Maijyot — Anclimeruiii.yia luteola, Fabr. 
“ Larva. — The full-grown larva is a fat, yellowish-white 
maggot, 12 to 12^ mm. (about half an inch) in length, bluntly 
pointed at the anterior or cephalic extremity, and truncate 
behind; its greatest breadth (on the sixth and seventh segments) 
is 5 mm. The body consists of twelve visible segments, the 
divisions between which are strongly marked, except between 
the cephalic and first body-segment (the latter of which bears 
the anterior or prothoracic stigmata or respiratory apertures), 
and between the eleventh and twelfth segments. On the under 
side of the cephalic segment, the tijis of the black paired mouth- 
hooks may be seen protruding, while in a slight depression on 
the flattened posterior surface of the twelfth segment are 
situated the paired posterior stigmatie plates. In an adult 
larva, the slit-like apertures in these plates are not very easy 
to distinguish, but in a maggot in the second or penultimate stage it is seen that each plate 
bears three ridges of tawny-coloured chitin; these ridges run obliquely downwards and 
outwards at an angle of 45° from the median vertical line, and while the median ridge on 
each plate is nearly straight the other two ridges are characteristically curved, resembling 
Variety of 
a. morsitans 
* Journal of the Royal Army .Uedical Corpa, April, 1908, p. 4*27. 
- Thid., January, 1908. 
Rc])roduccd by kind pornii.ssioii of the Editor (Col. Bruce) of the Journal of (he Rmjal Army Medical Cor})s. 
