902 REPORT OF THE HARVARD AFRICAN EXPEDITION 
longicornis), where it is known positively from the Kavirondo District in Kenya 
Colony, Uganda, and the Belgian Congo. If Kréber’s specimen from Alcu, 
Benito, was correctly identified, C. funebris would extend as far west as Spanish 
Guinea. The eye markings in life are shown in Text Fig. No. 8e; they differ 
little from those of C. longicornis. 
Tribe Scepsidini 
Adersia Austen 
Adersia Austen, 1912, Ann. Mag. Nat. Hist., (8) IX, p. 4. Monotypic for Silvius oestroides Karsch, 
1888. Surcouf, 1921, ‘Gen. Insect., Tabanidae,’ p. 158. Enderlein, 1925, Mitt. Zool. Mus. 
Berlin, XI, 2, p. 308. 
This genus contains only one species, which has been found in East and South 
Africa, from Somaliland to the Cape Colony. 
Braunsiomyia J. Bequaert 
Braunsiomyia J. Bequaert, 1924, Psyche, XXXI, p. 26. New name for Brodenia Surcouf, 1921. 
Brodenia Surcouf, 1921, ‘Gen. Insect., Tabanidae,’ p. 160. Monotypic for Brodenia cinerea 
Surcouf, 1921. Not Brodenia Gedoelst, 1913. Enderlein, 1925, Mitt. Zool. Mus. Berlin, XI, 2, 
Dy obs, 
This interesting tabanid has been so incompletely characterized by Surcouf, 
that its recognition has given considerable trouble. To begin with, the type 
specimen of Braunsiomyia cinerea was a female, not a male as claimed by Sur- 
couf. This explains the unusually wide frons, which is even broader than in the 
female of Adersia oestroides, and the presence of a large frontal callosity. A 
specimen taken by Dr. H. Brauns at Zwartkops, near Port Elizabeth, now before 
me, is, I believe, the true male of Brawnsiomyia cinerea: it has the eyes com- 
pletely holoptie. 
The character of the venation of the wing used by Surcouf to separate 
Braunsiomyia and Adersia, — viz., the reduction of the longitudinal veins be- 
tween the second, third, and fourth posterior cells in the former — is not con- 
stant in my opinion. In both Braunsiomyia and Adersia these veins show a 
tendency to fade out; but, in what I regard as the male of B. cinerea, they are 
still well marked. 
The real differentiating characters between these two genera are those men- 
tioned in my key. Surcouf writes in his key to the genera that the third an- 
tennal segment of B. cinerea consists of six divisions. In the male before me, one 
can see seven divisions under the microscope, four in the basal portion and three 
in the style. On the other hand, a series of three females and seven males of 
Adersia oestroides have eight divisions in the third antennal segment. 
Both Adersia oestrovdes and Braunsiomyia cinerea were observed by Dr. 
Brauns on the ocean beach near Port Elizabeth during December. The two 
sexes rest on the decaying seaweeds accumulated in the drift. Surcouf’s surmise 
that Braunsiomyia is a “type adapted to a parasitic life” is a mere speculation 
not supported by any facts. The mouth-parts of the adult are aborted, and 
even the female is unable to bite or to take any food whatsoever. The early 
stages are totally unknown. 
