Gumma, Tokio, Kioto, Tsushima, Miyazaki, and Kumamoto, from 4th 

 to 24th in August. I collected only a single female which \vas sucking 

 blood, resting on the belly of rather a young horse, at nine o'clock 

 in the morning, on the 24th of August, 1916, at Akaiwa, Hokkaido. 

 There is no doubt that the female is a blood sucker. 



Miss Ricardo states in the Records of Indian Museum Vol. IV, 

 p. 245, that Atylotns rufidens, Bigot, may possibly be a denuded species 

 of the subform trigonus, but I believe Bigot's species might be a valid 

 one as many materials from Hokkaido quite identify with his original 

 description, and these specimens quite differ from trigoims. 



29. Tobanus coquilletti, Shiraki (n. n.) (PL VIII, fig. 

 4; PL X, figs. 12 & 13). 



(Hatakeyama-Abu). 



Tabanus tenebrosm, (nee. Walker, 1854) Coquillett, Proc. U. S. Nat. 



Mus., XXI, p. 310, 1898. 



Kertesz, Cat. Dipt., Ill, p. 285, 1908. 



Kicardo, Rec. Ind. Mus., IV, p. 243, 1911. 



A medium-sized blackish species, with a linear frontal callus on 

 the narrow not parallel-sided greyish frontal stripe, with the reddish 

 yellow antennae bearing the small dorsal hump, with five rather incon- 

 spicuous greyish stripes on the thorax, with the large brownish red or 

 yellowish red lateral spots on the second segment, with the first 

 posterior cell of the wings narrowed towards the margin, and with the 

 blackish legs except the most basal part of the tibiae yellowish. 



Female. Head not large, as wide as the thorax, slightly arched 

 behind. Frontal stripe yellowish grey, narrow, very slightly contracting 

 from the vertex to the lower end and about five times as long as its 

 broadest part or wholly five and a half times as long as its narrowest 

 part, bearing very short somewhat depressed yellowish grey pubescence 



