WILLISTON: EXOTIC TABANID.^. 1 95 



Tabanus festivus, Wiedemann, Auss. Zw. Ins. i, 135. — Brazil. 



One specimen, Ghapada. The densely ciliate hind tibis, black 

 in front and white behind, renders this handsome species easily 

 recognizable. 



Tabanus T-nigrum Fabricius, Syst. Ant)., 101: Wiedemann. Auss. Zw. Ins. 

 1, 160.— South America. 



Two females from Rio de Janeiro, November. The third joint of 

 the antennae, with its basal process, is very slender. The palpi also 

 are unusually slender. The front tibiae are brownish at the tip only, 

 and all tlie tarsi have the three or four distal joints brown. 

 Tabanus leucaspis Wiedemann, Auss, Zw. Ins. i, 170. — Brazil. 



Three specimens, Chapada. The basal process of the third anten- 

 nal joint is a mere tubercle. The palpi brownish, the front tibiae 

 light yellow on the proximal third, the middle and hind pairs on the 

 proximal half or two-thirds. Eyes bare, ocelli minute. The opaque 

 white scutellum is a conspicuous characteristic of the species. 

 Tabanus unicolor Wiedemann, Auss. Zw. Ins. i, 141. — Brazil. 



Two specimens, Uarcarizal, Febr. The third joint of the anten- 

 nae is brown, with a moderately elongate basal process. The front is 

 rather broad, wholly without denuded spots ami without ocelli. 

 Eyes bare. 

 Tabanus importunus Wietlcinann, Auss. Zw. Ins. i, 127 — Brazil. 



Three specimens, Rio Paraguay, below Concepcion. The speci- 

 mens agree with the description, except that the legs are more yellow- 

 ish, with the tarsi brown or black. The third joint of the antennae 

 is in some specimens mostly black; its annulate portion is slender, the 

 process above acute, but not produced. 

 Tabanus modestus Wiedemann, Auss. Zw. Ins i, 14(5.— Brazil. 



The third joint of the antennae in some specimens is vvhoUy reddish 

 yellow; in others with the short annulate portion blackish; its basal 

 process is sub-angulate, not produced. The eyes in the female are 

 wholly bare; thickly and distinctly pubescent in the male. There 

 are no ocelli. In the male, the legs and antennae are somewhat 

 darker, but there is scarcely any other difference. Eight specimens, 

 Chapada and Rio de Janeiro. 



Tabanus quadripunotatus Fabricus, Entom. Syst. !)9: Wiedenian, Auss. 

 Z.V. Ins. i, 150; Schiner, Ileise der Novara, Dipt. 80. — Brazil. 



A single specimen from Rio de Janeiro seems to be of this species. 

 From Wiedemann's description it differs in not having a very strong 

 tooth to the third joint, and in lacking the " Dornchen " on each side 

 of the vertex. Schiner's description of the abdomen, but not of the 

 legs, agrees better. All the tibiae are blackish distally. The first 

 posterior cell is narrowly open. 



