388 



TABANID.f: 



old collection of J. F. Stephens in the British Museum. Duncan (1837) 

 stated that it was scarce in Scotland but common in Cambridgeshire. It 

 is recorded from Middle and Southern Europe and probably from North 

 Africa. 



Syrionymy. — I can add but little to this except to say that the old records must 

 be accejjt'ed with doubt as the specific distinctions were not sufficiently known. 

 Six female specimens under the name of T. RomseUii Macq. in Bigot's collection 

 (three from Biskra) are in bad condition and can only be referred with doubt to this 

 species, as I think they have the frontal calli larger. 



9. A. latistriatus Brauer. Very much like A. rustic us but the two 

 dark stripes down the abdomen are not bowed out and are indented on the 

 outside at the foremaro-ins of the segments. Femora in both sexes with 

 almost the apical half obscurely orange or brownish. Frontal stripe of the 

 female broader. 



Very easily mistaken for A. rusticus, but altogether of a 

 more blackish hue. 



$ . Very much like A. rusticm, but frons, face, and jowls with a slightly darker 

 grey tinge and with slightly yellower pubescence ; back of the head 

 more blackish ashy grey, and the postocular fringe brownish yellow ; ocellar 



space darker brown, and mth the 

 pubescence more brownish ; fron- 

 tal triangle slightly more greyish 

 yellow, VdX\)\ (fig. 2.32) yellow 

 with a blackish tinge, rather 

 narrower, and bearing rather 

 dense short black bristles on the 

 outside and some longer but 

 sparser black bristles dorsally 

 and towards the tip, and with 

 some inconspicuous pale yellow 

 hairs beneath ; basal joint with 

 some long but not very con- 

 spicuous pale hairs on the under- 

 Via.^zi.-AtyioULsiaastriattisi. x 22. ^{^^^ Eyes clothed With darker 



Palpi and proboscis seen almost from Deneatn. ^ » , t u 



^ ^ grey pubescence. Antennae dull 



luteous, Avitli the style and sometimes the apical third of the basal segment 

 of the third joint brown ; basal joint bearing numerous short black bristles 

 on the whole of the upper and outer sides and a few short pale hairs 

 beneath ; second joint short and liearing short Idack bristles Avhicli extend 

 over more than the dense apical circlet ; third joint with the dorsal hump 

 much less prominent and placed well before the middle of the basal segment. 



Thorax and scutellum rather shimmj lilackisli brown (not dull slaty 

 blackish grey as in A. rust/ciis) and in some lights with some vague paler 

 stripes ; the slight brownish tinge is caused by a little brownish grey dust ; 

 pubescence composed of inconspicuous (unless viewed from in front) short 

 brownish yelloAv hairs all over the disc, which develop into conspicuous 

 ])atclies of longer hairs on the postalar calli, but longer suberect stift'cr black 

 hairs also occur all over the disc. Pleurae clothed with brownish yellow 

 pubescence, which becomes paler on the metapleurae. 



Abdomen narrower and distinctly more acuminate, grey with the basal 

 corners more fulvous than in ^1. j-t/i^ticu.s ; Avlien seen from above there is a 

 broad blackish middle stripe Avhich has dentate sidemargins because the 

 fulvous colour extends inwards at the incisures, but when seen from behind 

 there is a broad equal brownish yelloAv middle dorsal stripe (no row of pale 

 middle triangles) outside of Avhich are dark grey stripes, succeeded by 



