350 Miss G. Ricardo on the Tabaiiinse 



8. Antennae long, the third joint cylindrical, 



situated on a projecting tubercle Udenocera, g. n. 



Antenna? not very long, the third joint 

 not cvHudriral, not situated on a pro- 

 jecting tubercle Diar/ilorns, Ost. Sacken 



[JJiahasis, Macq.]. 



9. Abdomen short, stout, very convex .... Stibasoma, Schiner. 

 Abdomen not short, stout, or very convex. 10. 



10. Antenna3 long and slender, the first joint 



long Acanthoccvo, Macq. 



Anteunaj not very long and slender, first 

 joint not long 11. 



11. Species of a .«lender bnild, usually with a 



banded thorax and abdomen, third joint 

 of antenna; slender, nio.stly with brown 



markings on the wings Dichehiccra, Macq. 



Species of a stouter build, third joint of 

 antennae stout Tabanui^, L. (in sens. lat.). 



Hexatoma, Meig.-, Syst. Bcsclir. ii. p. 83 (1820). 

 Heptatoma, Meig., Illiger's Mag-, ii. p. L^67 (1803). 



Hexatoma pellucens, S ? > Fabr,_, Gen. Ins. Maut. ii. p. 308 

 (1776) {Tabanus). 



Tahmivs albipes, Schrank, Ins. Austr. p. 480 (1781). 

 Heptatoina bimacuUitu, Meig., Klats. zweifl. Ins. i. p. loG, jd. ii. 

 figs. 5-10 (1804). 



For tlie full list of references see ' Katalog Palaarktisclien 

 Diptera/ Bezzi, vol. ii. p. 54 (Budapest, 1903). 



One male and one female from Germany, 58. 80 {Ruthe). 



One female from Prussia, 4. 6. 92 (Kirby). 



Two males and one female from unknown locality. 



Dasybasis, Macquart. 



Dasybasis, Macq., Dipt. Exot. Suppl. 2, p. 25 (1846) ; Loew, Dipt, 

 bddafrik. p. 31 (1860). 



This genus Avas formed for one species from Australia, and 

 Bigot describes another from Chili. I have no knowledge of 

 either. 



The genus is distinguished by its hairy eyes, the hairy first 

 two joints of the antennae in the male, and by the presence 

 of only four divisions on the third joint, with no tooth or 

 angulation, but slightly swollen in the middle. 



D. appendiculata, S 9- > Macq., l. c. pi. i. fig. 1 ; Walker, List Dipt. pt. v. 



Suppl. 1, p. 267 (18.54).— Australia. 

 v. trietis, S , Bigot, M^m. Soc. Zool. Fr. v. p. 621 (1892).— Chili, 



