Tuhamdee from the Dehjian Congo. 561 



(p. 222) under the name Chrysops fusca is probably not the 

 true C.fusca, llic. (=6'. sf.if/maltca/is, L\v.), but belongs to 



C. distinctipennis, Austen. 



Pangonia ticavei, Beq. (ncc Diatomineura nenvei, Austen). 

 — Dr. Bcquacrt regards Diatomineura inornata, Austen, 

 whieh was described from a single ? in the British Museum 

 collection, as conspecific with Diatomineura neavei, Austen, 

 c? {nee ? ), and he terms this supposed species Pangonia 

 neavei (p. 224). A very brief re-examination and com- 

 parison of the types of Diatomineura neavei, Austen, and 



D. inornata, Austen, is, however, sufficient to confirm pre- 

 vious conclusions, and to show that these types respectively 

 belong to two perfectly distinct species. As stated by the 

 present writer at the end of the original description of 

 Diatomineura neavei, Austen (Bull. Ent. Res. i. p. 281, 

 January 1911) : — "This fine species .... is evidently allied 

 to Diatomineura (Corizoneura) distinct a, Ricardo .... to 

 which, in both sexes, it presents a general resemblance in 

 appearance, besides agreeing with it in the character of the 

 sexual colour-dimorphism." Diatomineura inornata, Austen, 

 on the other hand, has a very different facies, and, in the 

 female sex at any rate, is distinguished from D. neavei, 

 Austen, inter alia, by having a pair of small, brown, facial 

 calli, instead of a single, large, black callus, and by the very 

 different colour of the abdomen and legs, and of the costa 

 cells in the wings. Pangonia neavei, Beq. (nee Diatomi- 

 neura neavei, Austen), is therefore the designation of a false 

 concept and not of a species, and must accordingly be 

 dropped. 



Pangonia austeni, Beq. (p. 225). — Dr. Bequaert considers 

 that Diatomineura neavei, Austen, ? , and Pangonia infusca, 

 Austen, ^ , belong to the same species, for which he proposes 

 Pangonia austeni as a nomen novum. In this case again 

 Dr. Bequaert, who states that the only difference between 

 Diatomineura neavei, Austen, ? ,and Pangonia infusca, Austen, 

 (J , is to be found in the venation, is evidently under a com- 

 plete misapprehension. The present writer's belief in the 

 correctness of the concept to which he applied the designation 

 Diatomineura neavei has already been reaffirmed. The types 

 of both sexes of Pangonia infusca, Austen, as also those of 

 both sexes of Diatomineura neavei, Austen, are contained in 

 the British ^Museum collection ; in the former case the sexes 

 are alike as regards the colour and markings of the body, 

 and in respect of markings are very different from the ? of 



