Mr. C. G-. Lamb on Exotic Ohloropidse. 



395 



move dusky than the description would indicate ; all the tibiae 

 are § blackened, trout tarsus, other tarsi on last joints, and 

 middle of hind femur also black. 



Though the species was originally described from New 

 Guinea, I can only consider these specimens to be a local 

 form. 



Natal: Durban (F. Muir, Camb. Coll.). 



Oscinis longipes, sp. n. 



There is a single female specimen from South Africa 

 which must be mentioned, in spite of the objection to single- 

 specimen species. It is an abnormal form of the atricornis 

 group, differing in size, venation, form of antenna, and in 

 its very long legs. When the genus is fully investigated, 

 this will probably be recognized as being of generic rank. 



Head, generally speaking, like that of an ordinary black 

 Oscinis : top view, all black, the triangle excessively shining- 

 black and very large, the base lying across the vertex, the point 



Fig-. 27. 



Oscinis longipes, X 22. 



over the antenna?, the sides much arched, so as to leave the 

 eye-margins narrower than usual and evanescent at vertex. 

 Face rather blackened behind antenna?, but lower half pale 

 yellow; antenna blackish brown, 2nd joint large, 3rd quite 

 large, oval in outline, and about as broad as face ; the w r ell- 

 pubescent arista is also brown. Side-view: eyes faintly and 

 ■sparsely pubescent, large, the frontal and anterior boundary 

 quite circular in outline, leaving only the tip of f'rons just 

 visible, the posterior and inferior boundary more flattened, 

 leaving the linear lower jowls" and well-marked somewhat 

 swollen hind jowls visible, these being all black; small 

 vibrissa; palpi retracted, orange; tongue with a recurved tip, 

 the base black, the tip yellow. Hind head all black. The 



