South African Higher Myodarii (Dipttra Qalyptratae). 503 



Palaearc. Dipt., 1, p. 138), if the frous did not bear an orbital seta in 

 both sexes, which is the main characteristic of the new genus 

 PyrrhosieU'i. 



PYRRHOSIELLA CINGULATA, u. sp. 



P. cingulata is a black species. Head white, but shining black on 

 each side of the vertex ; antennae and chaeta black, the latter slightly 

 pubescent, long and fine and thickened beyond the first third ; palps 

 thinned towards the apex, brownish ; proboscis black. Thorax with a 

 thick white indumentum on the pleurae, slight on the tergum where 2 

 undefined black bands fused behind the suture are visible. Scutellum 

 black. Abdomen black with 3 white bauds prolonged under the venter, 

 on which is also a white band under segment 1. Wings greyish or 

 brownish ; hind transverse straight and nearly perpendicular ; no 

 costal spine. Squamae whitish ; halteres entirely yellow. Legs black, 

 a band of white indumentum on the external face of the thighs. This 

 species is widely spread in Africa, from the Tropics to the South. The 

 body is as elongated as that of the Ocyptera. The two sexes are quite 

 alike and can be recognised by the examination of the genitalia only. 



Length 8-9 mm. 



Two examples from Natal, Durban (H. W. Bell-Marley), S. 

 Afric. Museum ; French Congo (E. Eoubaud) ; Belgium Congo (J. 

 Bequaert) ; Sierra Leone (J. J. Simpson) ; Gold Coast (W. H. 

 Patterson) ; Nigeria (Dr. Ingram, T. F. Gr. Mayer, J. W. Scott- 

 Macfie) ; Nyassaland, Mt. Malanje (S. A. Neave). 



ASBOLEOLA, n. gen. 



I deem it useful to describe here 2 species common in the tropical 

 region, and the affinities of which with the precedent genus are mani- 

 fest. The general characters are identical ; the difference is in the 

 less raised head, and shorter antennae ; the width of the frons in the 

 ^ measures half that of the eye, and there are no orbital setae ; that 

 of the $ is a little wider and there are 2 orbital setae. Fourth abdo- 

 minal segment with a row of small discal setae. First posterior cell 

 opening in front of the apex of the wing. The anterior claws of the 

 <? , instead of being very short, are as long as the ultimate tarsal joint, 

 or reach slightly beyond. The species are of larger size and form a 

 group belonging to the section Pseiidodexidae degeeriaeformes Br. & 

 Berg. Pyrrhosiella belongs to the same group. 



