XIX. 
ANNALES MUSEI NATIONALIS HUNGARICI. 
1922. 
ON SOME TABANIDAE COLLECTED 
BY MR. SAUTER ON FORMOSA. 
By Z. Szilád y . 
The last published Monograph of Formosa Tabanidae by T. Shiraki 
may be supplemented by the following descriptions. The types are in the 
Dahlem Museum and in the Budapest Museum. 
Tabanus aurotestaceus Walk. 
The first Formosa specimen, a çf from Jushifun, Taihoku Distr., 
differs from Ricardo’s description in the following characters: The legs 
are almost entirely dark coloured, the yellow basal part of all tibiae 
excepted. Ocellar tubercle compressed, sunken somewhat beneath the 
level of the eyes. Vertex without border. Hind border of eyes very short- 
fringed. Eyes without purple band. The yellow coloured larger facets 
sharply separated, about 6 times as large as the dark blue coloured 
smaller ones. Frontal triangle as well as the outer parts of head golden 
yellow. Second joint of palpi with a few dark hairs intermingled with 
ochraceous ones. On the abdomen the dark haired parts are less extended 
than in the female; only the fore margins of segments 4—7 bear a narrow 
dark stripe interrupted in the middle. 
A $ in the Budapest Museum, determined by Miss Ricardo, has 
a black frontal callus, dark blue eyes and no ocellar tubercle. 
Tabanus (Ochrops) bivittatus Mats. 
One 9 from Tainan, differing in the frontal callus not being of an 
orange colour, the band of the eyes being absent, and the yellow colour 
on the abdomen being represented only by two larger and two smaller 
spots. Similar variations being known in European species of Ochrops 
as well, the specific identity of the specimen seems to be doubtless. 
Ochrops bivittatus is allied to my 0. miser , differing from the latter as 
follows: 
