50 



Christchiirch, Hants, July ist, i^^CfA, {Lieut. -Colonel Yerhiny) ; various 

 localities in S. Devon, June 24th — July 30th, 1889 {Lieut. -Colonel 

 Yerbury). 



Tabanus broniius is distributed throughout Europe ; the Museum 

 series (general collection) includes specimens from France, Switzerland, 

 Italy, Hungary, and Corsica. As an instance of the abundance of this 

 species in certain Continental localities, it may be mentioned that 

 Brauer states that he once captured about one hundred specimens of 

 7". broiiiius on a window near Liezen in Upper Styria. 



Tabanns maculicornis, Ztt. 

 Plate 24. 



In the marking of the abdomen the females of this species 

 resemble those of the foregoing, though the spots are paler and often 

 less sharply defined. Apart, however, from their usually smaller 

 size and darker appearance, the females of T. inactilicornis can at 

 once be distinguished from those of T. bromius by the much greater 

 width of the light-grey supra-occipital border of the head, behind 

 the upper margin of the e}-es. In the male .sex also the abdominal 

 markings are paler than in T. broniius (whitish instead of yellow), 

 while the head is relatively much larger. According to Brauer 

 {loc. cit., pp. 197-198), the eyes of the male of T. maculicornis 

 are "green, with a broad purple band at the junction of the different 

 sized facets " ; those of the female are described as " green, often 

 with a coppery sheen, with a sometimes narrower, sometimes 

 broader, purjjle band, w hich becomes le.ss distinct towards the inner 

 and outer margins." Tabanus maculicornis is, as a rule, distinctl}- 

 the smallest of the British species of Tabanus, although small females 

 of f. cordiger, Mg. (Plate 25), sometimes do not exceed large females 

 of the present species in size. In the British series of T. maculicornis 

 in the Museum collection the length of the males ranges from 1 1 to 

 13 mm., and that of the females from 11^ to 13^ mm. The time of 

 flight appears to be June and July. 



Colonel Verbury notes that this species, like the foregoing, is 



