ETHIOPIAN FRUIT- FLIES OF THE GENUS DACUS. 93 



In the collection before me hivittatus is represented from the following localities : — 

 Nigeria, Thadan {Capt. Leslie) ; Uganda Protectorate, Entebbe and Tero Forest, 

 9-16. viii. 1911 (C. C. Gowdey), Mt. Kokanjero, S.W. of Elgon, 6,400 ft., 7-9. viii. 1911 

 and Northern Buddu, 3,800 ft., 16-18. ix. 1911 (S. A. Neave)\ Nyasaland, Muona, 

 Ruo Distr., 12.x. 1912 {Dr. J. E. S. Old) and Mt. Mlanje and Ruo, ix.-x.l913 (S. A. 

 Neave) . 



A specimen from Kerinya, i.l911 (Dr. G. D. H. Carpenter), was sent to me deter- 

 mined as bipartitus, Graham ; and one of the specimens of Mt. Mlanje is determined 

 as pectoralis, Walker, having probably been compared with the type. 



5. Tridacus momordicae, nom. nov. 



Daciis bipartitus, Bezzi {fiec Graham) in Silvestri, Boll. Lab. ZooL, Portici, viii, 

 1913, p. 90, fig. xxiv, and Div. Ent. Hawaii, Bull. 3, 1914, p. 90, pi. viii, fig. xxiv. 



At present I have only seen the specimens bred from Momordica in Camerun by 

 Prof. Silvestri, which I had erroneously referred to bipartitus. The species is very- 

 distinct owing to its single hypopleural spot ; the wing pattern is also characteristic, 

 as shown in Prof. Silvestri's figure ; the mesopleural band is very broad ; the last 

 portion of the fourth vein is strongly bisinuose. The unspotted frons is also charac- 

 teristic. The facial black spots are large, and sometimes fused together, forming 

 a single broad black band ; the latter condition seems to be the rule in the male sex. 



6. Tridacus eburneus, sp. nov. (figs. 7, 8). 



Closely allied to the preceding species, but readily distinguished by the coloration 

 of the frons and thorax. 



(J. Length of body, 7-8 mm. ; length of wing, 6-6-5 mm. 



Fig. 7. Dacus ehurneus, Bezzi, sp. n.; 



oblique posterior view of thorax, to 



show the single yellow hypopleural 



spot. 



PrevaiUng colour of the body black, the ivory-coloured markings of the thorax 

 very striking. Frons of a dark reddish brown colour, with less defined blackish 

 markings, forming a transverse band, and some spots on the orbits, which are 

 yellow ; occiput black, with a narrow yellow border ; face shining black, the jowls 

 only being yeUow ; the peristomial dark spots below the eye are broad ; palpi and 

 proboscis dark yellow ; antennae long, dark yellow, the third joint infuscated towards 



