49 
is found throughout Central and Southern Europe, from Sweden to 
Corsica and Corfu, while it also occurs in Asia Minor. 
The eyes in T. autumnalis are without bands ; Brauer describes 
those of the male as " black, iridescent, the large facets grey." As 
regards the dimensions of the British specimens in the Museum, the 
length of the males varies from 16 to 19 mm., that of the females 
from \6\ to 20 mm. ; the wing-expanse of the largest female is 38 mm. 
Tabanus bromius, Linn. 
Plate 23. 
This species, as stated by Colonel Yerbury, is very common in the 
south of England ; it is also the most easily recognised of the smaller 
species of Tabanus, since the large, conspicuous, and sharply defined 
yellowish spots on the abdomen give it quite a distinctive appearance. 
It is true that dark females of Therioplectes moutanus, Mg., with little 
or no chestnut colour on the sides of the abdomen present a certain 
similarity to females of the present species, but they can, of course, at 
once be distinguished by the eyes being conspicuously hair)'. 
An examination of the British series of Tabanus bromius in the 
Museum collection shows that the males vary in length from 13^ to 
15 mm., while the length of the females ranges from 131 to 16 mm. 
The eyes of the male have an area of large facets in the upper half ; 
those of the female are described by Brauer (Joe. eit., p. 188) as being 
" sometimes lighter, sometimes darker green, shimmering red " ; in 
both sexes the eyes have a single purple band. 
In England Tabanus bromius would appear to be on the wing from 
June to August ; the localities and dates of the British specimens in the 
possession of the Museum are as follows : — Stockenchurch, Oxford- 
shire, August 15th — 1 8th, 1896 (Lieut.-Colonel Yerbury); Oxshott, 
Surrey, June 16th, 1895 (W. R. Ogilvie Grant); Bearsted, Kent, 
July 26th, 1896 (E. E. Green) ; Crowborough, Sussex, July 10th, 1892 
(W.'R. Ogilvie Grant); Lyndhurst, New Eorest, Hants, June 28th — 
July 21st (Lieut.-Colonel Yerbury; F.C.Adams; F. W. Frohawk); 
D 
