African Phhhotomic Dip'era. 359 



joint and under surface of base of terminal joint clothed with 

 longer yellowish hairs, outer surface of base of terminal 

 joint clothed with shorter glistening yellowish or whitish 

 hairs mixed with some black hairs, distal extr.nnity of 

 terminal joint bhintly pointed; antenna:, excejit for their 

 larirer size and the greater breadth of the expanded portion 

 of the third joint, reseml^ling those of ^ . Thorax : dorsum 

 clothed with short, erect, black hairs, which on scutellnm 

 and on greyish area in front are replaced by glistening 

 greyish- white hairs ; hairs of latter kind are also largely 

 present on postalar calli and on region immediately in 

 front of these, and are interspersed with the bhick hairs 

 on the sides and anterior portion of the dorsum, and also 

 immediately in front of scutellnm ; pleune and pectus grey, 

 and clothed partly with grey, partly with dark brown or 

 brownish hair. Abdomen : dorsum agreeing with that of (^ , 

 as described above, except that the triangles on third, fourth, 

 and fifth segments are larger and broader and the hind 

 borders of those segments deeper, especially at each lateral 

 extremity, where they are expanded and curve forward so 

 much as almost to reach posterior angles of preceding seg- 

 ment ; the pale hairs on the dorsum are also shorter and 

 somewhat less fine than in (J, and are set more closely 

 together ; ventral surface of first four segments greyisli 

 cinnamon-rufous, that of fifth segment (except hind margin) 

 more or less dark brown or brownish, ventral surface of 

 first five segments clothed with short, appressed, glistening- 

 whitish hairs, hind margins of ventral scutes of second to 

 fifth segments inclusive cream-buff; ventral scutes of last 

 two segments clove-brown, clothed with similarly coloured 

 or blackish hair, hind border of penultimate segment 

 isabella-eoloured. Wings as in cJ ; sepiaceous tinge next 

 distal extremity of costa, about tips of second longitudinal 

 and anterior branch of third longitudinal veins, usually 

 distinct. SqvanKB and halteres as in ^. Legs as in c?, 

 except that tibite are clothed with short, appressed, whitish 

 hairs ; hind tibiae, especially on outer side, with a short 

 fringe of somewiiat longer whitish hairs ; second, third, and 

 fourth joints of front tarsi exp luded. 



Nyasaland Protectorate and North-Western Rhodesia : 

 type of male, three other males, and one female (para-types) 

 from the Kaninga Stream, Central Angoniland, Nyasaland 

 Protectorate, alt. 1,760 to 2,500 ft., 21, 25. i. 1911 {Dr. Mere- 

 dith Sanderson : presented by the Entomological Research 

 Committee) ; type of female from Kasempa District, N.-W. 

 Rhodesia, between 3,500 and 4,500 ft., 1903 or 1909 (S. A, 



24-K 



