14 THE D1PTERA-BUACHYCERA OF TASMANIA, 



way above the margin. From T. edentulus, to which it 

 bears the closest resemblance, it is further distinguished 

 by the much longer pubescence of the hind tibiae. The 

 colouring of the hind femora resembles that of T. gcntilit, 

 but the latter species is distinguished by its spotted wings. 

 T. hobartiensii I have only met with at the Cascades. 

 Hobart, where it occurs very sparingly ; time of occur- 

 rence, December and January. 



Tabanus circumdatus, Walk. 



A large species with black thorax, striped with grey, 

 and red-brown abdomen. Frontal stripe of equal breadth 

 throughout ; antennae with first two joints reddish, third 

 black and considerably humped ; femora black, tibiae red- 

 brown ; wings clear. 



Length. Female, 15 mm. 



Hab. Tasmania (generally distributed). 



Female. Face white, nearly bare ; beard yellowish- 

 white. Frontal stripe of equal breadth throughout, brown, 

 dusted with grey, the lower third forming a shining brown 

 callus, which is continued upwards centrally. Palpi vary- 

 ing somewhat in colour from dull orange to dull reddish- 

 brown. Antennae with the third joint considerably 

 humped; the first two joints reddish, sometimes very 

 dark, third joint black, the first and second bearing short 

 black hairs. Eyes hairy. Thorax black, with two cen- 

 tral and two side grey-stripes, the whole bcarin<: black 

 pubescence; posterior borders and scutellum fringed with 

 long white hairs. Abdomen red-brown, with a row of 

 centre spots of yellowish-white pubescence ; there is also 

 a conspicuous black central spot on the second segment ; 

 the hindmargins of the segments are usually paler than 

 the remainder of the dorsum, but not conspicuously so. 

 and they bear yellowish-white pubescence on their outer 

 parts. Legs with femora black, to some extent covered 

 with grey fcomentum, the knees and tibia? rod-brown, tarsi 

 black ; femora with dense white hairs, which are par- 

 ticularlv long on the anterior pair; hind tibiae with short 

 black pubescence. Wings clear; c ubital fork with a some- 

 what long recurrent veinlet. 



Mali j/eiierallv resembles the female, but is more hairy; 

 the eyes are joined, and the abdomen narrower and more 

 pointed. 



Variation. A female from Bagdad differs considerably 

 from the type; the third joint of antenna? is nearly sym- 

 metrical, the frontal callus black instead of brown, the 

 black dorsal spot on the second abdominal segment is 



