364 Descriptions of British Diptera. 



wise with a white spot on each side, having a faint bluish reflexion, 

 and a white triangular point in the centre ; the hinder margin is like- 

 wise narrowly edged with white : legs black ; the anterior tarsi of 

 the male with fascicles of rather long hairs on the outer side ; hal- 

 teres nearly the colour of the abdomen; winglets paler; wings 

 greyish brown, the anterior margin, stigma, and transverse nervures 

 somewhat darker. 7 lines. 



A scarce species ; it has been found in the London district. 



Tabanus vittatus. 



Fab. Meig. Zwei. ii. p. 40. 



Prevailing colour dusky brown ; antennae grey at the base, the 

 terminal joint rufous ; hypostome greyish ; forehead likewise of that 

 colour, the vertex pale brown : thorax thickly covered with yellowish 

 grey pubescence, slate-grey, with a wide brown line in the centre 

 extending over the scutellum, and another on each side somewhat 

 interrupted in the middle ; sides of the scutellum slate-grey, the 

 surface pubescent like the thorax : abdomen blackish-brown, clothed 

 with short yellowish pubescence, and two greyish- white stripes, ex- 

 tending from the base to the apex : underside ash-grey, the abdo- 

 minal segments narrowly edged with yellow : thighs cinereous, ti- 

 biae and tarsi yellowish : wings greyish, with dark-brown nervures ; 

 halteres grey, with the stalk yellow. 5 lines. 



The only notice of the occurrence of this species in Britain which 

 we have seen is that sent us by Mr Babington, who states that he 

 found it in Monkswood, Hunts, June 17, 1828. 



Tabanus tarandinus. (s ?) 



Hypostome brownish-yellow, with a shining black point in the 

 centre : antennae rufous, the palpi rather paler, with the apex brown : 

 forehead of the female rufescent, having a black spot on the crown, 

 a larger one in the middle, and three others over the base of the an- 

 tennae : ground colour of the thorax black, the surface clothed with 

 reddish-yellow hairs : abdomen deep black, with a band of golden- 

 yellow hairs across the hinder margin of each segment, the bands 

 widening gradually on the hinder segments till they nearly cover 

 the surface ; underside of the abdomen likewise with yellow bands, 

 but narrower than those of the surface, the first segment entirely 

 black : halteres brown ; winglets yellowish ; wings pale brown, the 

 anterior margin and nervures brown, the latter margined with a 

 paler colour : legs rufous, the thighs almost entirely brown. 9 lines. 



The native country of this species is Lapland, where it is said to 



