ART. 6 NOTES ON ORIENTAL SAPROMYZID FLIES MALLOCH 71 



than the femoral diameter ; mid femur with a single very long bristle 

 near base on anteroventral surface. 



Length, 4.5 mm. 



Type.—QdX. No. 41153, U.S.N.M. Butuan, Mindanao (C. F. 

 Baker). 



This strikingly distinct species is represented by the type specimen 

 only, which is in poor condition, having been crushed in mounting. 



HOMONEURA (HOMONEURA) DENTIFERA, new species 



This and the next four species are very similar in appearance, all 

 being shining black, with some whitish dusting on head and thorax, 

 black halteres, fuscous bases to wings, and black legs, with yellow 

 tarsi. The frons is yellowish on front margin, the face, and eye 

 margins, are white dusted, and there are white-dusted areas along 

 inner margins of humeral callosities, and over the propleural spiracle. 



In all the species the frontal bristles are strong, the arista is plu- 

 mose, the thorax has three pairs of postsutural dorsocentrals, one pair 

 of prescutellar acrostichals, 8-10 series of intradorsocentral hairs, and 

 two sternopleurals. The fore femur lias an anteroventral comb, and 

 all tibiae have a preapical dorsal bristle. The differentiating charac- 

 ters are found in the structure of the male hypopygium. In dentifer 

 there is a stout process which has three or four sharp teeth projecting 

 at different angles. (Fig. 62.) 



Length, 4 mm. 



Type.— C?it. No. 41156, U.S.N.M Type, Singapore (C. F. Baker). 

 Paratype, Java (Jacobson). 



The paratype was sent to me as picea van der Wulp by Doctor de 

 Meijere prior to my receipt of the other specimens, similarly named, 

 now referred to trispina. It appears to me to be impossible to identify 

 which, if any one, of the species before me is that described by van der 

 AVulp. 



HOMONEURA (HOMONEURA) TRISPINA Mailoch 



Homoneura (Homoneura) trispina Malloch, Suppl. Ent., vol. 15, p. 109, 1927. 



There is practically no character so far as I can see for distinguish- 

 ing this species from dentifera except the structure of the male hypo- 

 pygium. (Fig. 65.) 



Localities. — Singapore (C. F. Baker) ; Sumatra; Buitenzorg, Java 

 (Jacobson). 



Type.— Cut. No. 41157, U.S.N.M. 



HOMONEURA (HOMONEURA) MAQUILINGENSIS. new species 



Here again we have to depend upon the structure of the male hypo- 

 pygium for distinguishing the species. (Fig. 64.) See characters 

 in key. 



Length, 4 mm. 



