Descriptions of British Diptera. 363 
This conspicuous insect, by far the most bulky of our native Dip- 
,tera, is found occasionally in moorland and uncultivated districts, 
apparently in most parts of Britain. In Scotland it seems to be of 
more frequent occurrence in the Highlands than in the southern 
counties ; although numerous specimens have been obtained from the 
latter. " Sutherlandshire," James Wilson, Esq. " Glen Clova," 
H. C. Watson, Esq. " Cardoness, Kirkcudbrightshire." " Monks- 
wood, Hunts/' Charles C. Babington, Esq. " Not uncommon in 
Cambridgeshire," Rev. Leonard Jenyns. (t Ireland," A. H. Holi- 
day, Esq. 
TABANUS AUTUMNALIS. 
Linn. Fabr Tab. bovinus, Harris' Expos. 27. pi. vii. fig. 1. ; Geoff, ii. 460. 
pi. 17, fig. 2. ; Meig. ii. 39. 
Considerably less than the preceding, seldom exceeding eight or 
nine lines : hypostome and palpi light grey, the forehead of the fe- 
male nearly white with a black line down the middle, dilated be- 
neath into a shining callosity : antennae black ; eyes in the male 
with a dark line in the middle : thorax pretty thickly clothed with 
hairs, brownish-grey, with four dark brown longitudinal lines : ab- 
domen greyish -white, with reddish brown reflexions in the male, 
the first segment brown, the others marked with four series of 
dark quadrate spots placed obliquely ; underside of the abdomen 
light-grey, inclining to red in the male, with a broad central black 
stripe, and the segments edged behind with white : thighs black ; 
tibiae brown, with the base white, nearly all white in the female ; 
tarsi dark-brown ; halteres and winglets brownish-grey, the former 
with the knob white : wings light grey, the nervures dark brown. 
7i-9 lines. 
Of occasional occurrence in many parts of the country. " Near 
London." Stephens' s Catal. "Cambridgeshire, but less abundant 
than Tabanus bovinus." Rev. Leonard Jenyns. 
TABANUS MICANS. 
Meig Tab. austriacus, Fab. Tab. niger, Donovan, xvi. pi. 564. 
Black ; hypostome with grey pubescence ; palpi and antennae pitch- 
brown j eyes green, with three purple bands, at least in the female ; 
the forehead of the latter grey, with a black spot at the base and 
vertex, and a longitudinal line of the same colour between them : 
thorax blackish, with very indistinct light coloured lines, the surface 
thinly clothed with greyish pubescence : abdomen black both above 
and beneath, with bluish reflexions ; the surface of the first segment 
with a white pubescent spot on each side, the following segments like- 
