382 



the redder form of this species as trigonus by Coquillett's original 

 description. 



28. Tabanns rnfidens, Bigot. (PI. VII, figs. 7 & 8 ; PL 



XI, figS. II & 12). 



(Yamato-Abn) 



Atylotus rufidens, Bigot, Ann. Soc. Entom. France, (6), VII, Bull., p. 



LXXVIII, 1887. 

 Tabanus rttfidens, Kertesz, Cat. Dipt., Ill, p. 275, 1908. 



Ricardo, Rec. Ind. Mus., IV, p. 245, 1911. 



A medium-sized blackish species with the abdomen reddish 

 yellow which is blackish at the apical part, with the long linear frontal 

 callus on the narrow frontal stripe and with the blackish legs in which 

 the tibiae are yellowish red or pale reddish brown, and with the small 

 nearly equal sized facets of the male eyes. 



Female. Head usually broader than the thorax, rather short 

 Frontal stripe pale yellowish grey or pale brownish yellow, slightly 

 paler downwards, narrow, moderately contracting from the vertex to 

 the lower end, and about five times as long as its broadest part or 

 about six and a half times as long as its narrowest part ; frontal 

 callus shining black and rather long, blunted below, not extended to 

 the eyes but extending upwards in a narrow line to beyond the 

 middle of the frontal stripe, the proper callus being about a half as 

 long as its upper linear extension ; pubescence on the frontal stripe 

 black but on the lower part there are some inconspicuous yellowish 

 white or yellow hairs which usually very sparsely extend up to just 

 below the vertex along the inside of the margins ; vertex dark grey, 

 covered with abundant short black pubescence which sometimes is 

 intermixed with a few short inconspicuous yellow or yellowish white 

 liairs about the middle, and behind the vertex there is an inconspicu- 

 -ous tuft of some very short (but slightly longer than those on the 



