18 R. OSTEN SA.CKEN 



p. 27. Nerua. In writing about this genus I implied, although 

 I did not distinctly mention , that Nerua Wk. and Evasa Wk. 

 are the same thing. The latter name is the earlier one. 



p. 50. Syrphus salvias. — Loew, Siidafr. Dipt. 311, claims this 

 name , with the quotation from Fabricius for the afrioan spe- 

 cies, for which it was originally intended. The yellow-faced 

 form, my S. salviae Wied. (non Fab.), must therefore re- 

 ceive another name, unless it is proved to be the same as 

 the african form, which is possible, because Syrphidae often 

 have a very wide distribution. The black-faced form would be 

 S. Macquarti Dol. The species belongs to the genus Asarkina 

 Macq., more closely defined by Loew, 1. c. 



p. 51. Graptomyza lineata. I have found, in M.'" Bigot's collec- 

 tion, a number of well preserved specimens, which enable 

 me to give a fuller description. 



GrraptomysBa lineata, 0. Sack. 

 Ann. Mus. Civ. Gen. XVI, p. 439. 



Of the same type with G. longirostris Wied. (II, 208), the 

 stature being elongated, the third antennal joint long and nar- 

 row, the body marked with longitudinal stripes, the proboscis 

 exserted far beyond the tip of the rostriform epistema. 



Body- and legs altogether reddish-yellow; epistema with a 

 blackish-brown stripe; antennae reddish; upper edge of the 

 third joint brown; arista yellow, brownish towards the tip; 

 short-plumose in the middle. Thorax : a longitudinal blackish- 

 brown line placed, one each side, immediately inside of the 

 humeral callus; they become evanescent before reaching the 

 scutellum; the depression of the scutellum is large and conco- 

 lorous; abdomen with three well-marked black or brown longi- 

 tudinal stripes, beginning at the base of the second segment 

 and reaching the tip of the abdomen ; halteres and legs yellow, 

 tips of tarsi brownish. Wings yellowish-hyaline, sometimes with 



