46 



bovinus are not noticeabh- larger than those in the lower, the facets in 

 the upper two-thirds of the eye of the male T. sudeiiciis are, with the 

 exception of those on the hinrl margin, at least four times the size of 

 the rest. In both species the eyes are devoid of bands, and, according 

 to Brauer {loc. cit., pp. 184, 185), in the living insect, while those of 

 the male of T. bovinus are entirely green, the eyes of the male T. 

 siidetiais are " blackish, with a copper)- sheen, the larger facets greyish, 

 the smaller ones more reddish." In the case of the females the colour 

 of the eyes is given b}- Brauer [loc. cit., p. 136) as "emerald green" in 

 T. bovinus, and as " alwa)-s blackish-brown, with a coppery sheen " in 

 T. sudeticHS. In both sexes the pale hind margins- of the abdominal 

 segments are usually more distincth- marked off from the ground colour 

 in T. sudeticus than in T. bovinus. 



The British series of Tabanus bovinus in the possession of the 

 Museum includes two males (both of which arc from the Waller 

 Clifton collection, and unfortunately without either localities 

 or dates), and nine females, all from the southern counties ; 

 the following are the localities and dates of the female specimens : — 

 Oxshott, Surrey, June i6th, 1895, (IF. R. Ogilvie Grant); 

 Farnham, Surrey, Julj' 13th, 1899, — "on window of Sub Post Office" 

 (yj. Rawlins) ; Froyle, Hants, July 6th, 1893 {IV. R. Ogilvie Grant) ; 

 L}-ndhurst, New Forest, Hants, June 30th, 1894 (Lieut.-Coloncl 

 Yerburj'), July 2ist, 1890 (F. IV. Fro/iazvk), and August, 1893 

 (Z. C. C/mwner) ; Ringwood, Hants, June 29th, 1894 {Lieut. -Colonel 

 Yerbury); and Ivybridge, S. Devon, July 26th, 1889 {Lieut. -Colonel 

 1 'erbury). 



The two males are respectively 20 and 2 1 \ mm. in length, and their 

 wing-expanse is 371 mm. in the one case and 39 mm. in the other. 

 The smallest British female in the Museum series is 21 j mm. in length, 

 the largest 23I mm. (wing-expanse 47 mm.). 



In addition to British specimens of T. bovinus, the Museum 

 possesses examples from the South of France, Hungar\-, and Poli.sh 

 Ukraine. Additional localities given by Brauer show that the species 

 is found from Sweden to Italy, and eastwards to Siberia and the Amur. 



Of the habits of this species Brauer writes {loc. cit., \x 187): — 

 " The females swarm round horses, cattle, and deer. The males hover 

 in the air in clearings in woods, and above somewhat elevated places 



