Descriptions of British Diptera. 365 



be very troublesome to the rein-deer. It has been long included in 

 our British catalogues, but we have never seen any particular loca- 

 lity cited for it. It is most likely to occur in the north of Scotland. 



Tabanus bromius. 



Tab. maculatus, De Geer — Tab. autumnalis, Harris' Expos, pi. vii. fig. 4. 

 Blackish ; palpi, hypostome, and forehead nearly white, the lat- 

 ter in the female with a square glabrous black spot at the base, and a 

 line of the same colour in the centre ; the crown black ; antennae 

 testaceous, the apex more or less dusky ; eyes green with a trans- 

 verse band of bright purple : thorax marked with five whitish lines, 

 the hairs grey on the back, but inclining to yellow on the sides ; ab- 

 domen with three series of yellow or greyish spots, the dorsal spots 

 triangular, the lateral ones rhomboidal or oval, and placed near the 

 hinder margin of the segments ; the latter with a white edging ; 

 underside of the abdomen greyish-yellow with a broad black band, 

 the hinder margins of the segments paler : thighs grey ; tibiae tes- 

 taceous with the extremity dusky ; tarsi black; wing slightly ting- 

 ed with grey ; halteres white at the extremity, the rest black. 6-7 

 lines. 



Of occasional occurrence in many parts of the country. " Near 

 London," Sieph. Catal. " Monkswood and the neighbourhood of 

 Bath," Charles C. Babinglon, Esq. 



Tabanus montanus. 

 Meig. Zwei. ii. 55. 

 " Hypostome and palpi yellow ; forehead nearly ferruginous, with 

 a shining black semicircular callosity, a black line above it, and a 

 shining point of the same colour on the crown ; the space between 

 this point and the line linear and of a reddish-brown colour : anten- 

 nae black, the first joint cinereous, the third inclining to testaceous 

 at the base : thorax blackish-brown, with indistinct greyish lines ; 

 sides of the breast ash-grey : abdomen brownish-yellow both above 

 and below with a broad black line in the centre, which on the up- 

 per side bears a series of yellow triangular spots, and beneath is 

 sometimes mixed with yellow ; the hinder margins of the segments 

 are also faintly edged with yellow : eyes with three purple arches, 

 the uppermost extending across the middle : winglets brownish ; 

 halteres brown, the apex nearly white : wings clear, with the ner- 

 vures reddish-brown : fore-legs with the thighs black, the anterior 

 half of the tibiae ferruginous, the hinder part brown : tarsi black ; 

 hinder legs with the thighs grey, tibiae ferruginous with the tip 

 brown, tarsi dark brown. 7? lines." 



