South African Higher Myodarii (Diptera Calyptratae). 487 



setae behind the ciliae. Two orbital setae ; a pair of long ocellary 

 setae pointing forwards. Thorax: 4 dc. ; st. 2 -f 1. Scutellum with 

 4 marginal setae, the apical as much elongated as the others and 

 crossed. Abdomen : segment 1 with 4 median marginal setae, the 

 external weak ; segment 2 with 2 median ; segment 8 with a row of 

 8 setae. No discal setae with the exception of a few short, irregularly 

 disposed setae on segment 3. Wings : no costal spine ; 2 ciliae at 

 the base of the 3rd nervure. 



Natal, 1 $ , Durban, S. Afric. Museum. 



I have 2 examples, one from the G-old Coast (W. H. Patterson), 

 the other from Northern Nigeria (J. W. Scott Macfie), which I would 

 identify with this species if the hind tibias were not densely and 

 regularly ciliate and bore a median seta ; they have besides 1 + 

 sternopleural setae and no discal. On segments 2 and 3 of the abdo- 

 men are a broad ashy opaque band in front and a narrow black band 

 behind ; on segment 2 is a black medio-dorsal line as in the $ , little 

 visible and evanescent on segment 3. These $ <$ vary also indi- 

 vidually ; in one, the two first segments are bare ; in the other, the 

 palps are partly testaceous. If it were found later that they belong to 

 a distinct species I propose for it the name Zentllia bicinta u. sp. If 

 not, the 9 > owing to its incipient discal setae, would be a new proof 

 that the genus Ctenphorocera B. B. lacks validity. 



I have received from Dr. L. Pe'riuguey 3 ? 5 obtained from 

 hatching, which seem to be the palaearctic Pales pavida Meig. ; one 

 has only marginal setae on the abdomen (Ctenophorocera B. B.), 

 another has 2 short discal setae 011 segment 3, while in the third 

 these discal setae are well developed (Pales E. D.). It follows that 

 in the last-named genus, certain species undergo a reduction affecting 

 not only the length but also the number of the setae. So far as 

 the vibrissae are concerned what is true of Pales is also true of 

 Zenillia E. D., because in these two genera the separation is not 

 definite, they include extreme forms whereas there are intermediate 

 forms, and as in the $ the vibrissae ascend usually higher than in 

 the ? , one can be led to the absurd conclusion that each of the 

 sexes standing by itself will be included in a different genus. Pau- 

 delle is therefore justified in accepting the genus Zenillia E. D. only, 

 which moreover has the priority. 



PEOZENILLIA, n. gen. 



I propose this genus for a species having the same coloration as 

 the preceding, the scutellum broadly rufous and the wings hyaline with 



