igii.] G. RiCARDO : Revision of the species of Tabanus. 253 



Male (type) from Bagdad (W. K. Loftus), 50, 105; and another 

 male from the same locality. 



Female (type) from same locality. 



The males would come in Brauer's tal)le near auiumtialis, 

 spcdahiLis and rectus. The female, which is much smaller, may 

 possibly not belong to the same species and has a slight resemblance 

 in appearance to Atylotus rusticus, L,. 



A redescription may prove of use : — 



Reddish brown species, with grey median triangular spots 

 on the abdomen. Eyes bare ; no long hair>^ on the hind ])art of 

 the head. 



Male. Head large ; facets of eyes unequal, sharply divided, 

 the large facets yellowish, extending over more than half the e3'es, 

 surrounded by a narrow zone of small facets above and a broad 

 zone on the basal half. Frontal triangle grey, reddish at apex. 

 Antennae red, with the apex darker ; the third joint with a small 

 tooth, long and slender, the annulated portion not so long as the 

 basal joint ; the ocelligerous tubercle small, brown. Face whitish, 

 with white hairs ; beard white ; palpi white, the second joint oval, 

 with white pubescence. Thorax blackish, with four grey stripes 

 and greyish pubescence ; the shoulders red ; the sides reddish , 

 with black hairs abo^'e and whitish ones below ; scutellum black, 

 with grey tomentum. Abdomen long and narrow, reddish, with 

 a row of median gre}' triangular spots, which on the second and 

 last segments are surrounded by black margins ; the hind borders 

 of the segments narrowh' w^hite, the pubescence black ; the under 

 side brighter red, with some irregular black markings. Legs red ; 

 the coxae and femora with longish white hairs ; the tibiae with short 

 black pubescence on the sides and some whitish yellow hairs on their 

 Hat surfaces ; tarsi with black pubescence, pulvilli yellow. Wings 

 longer than the abdomen, hyaline, the stigma and \-eins yellow ; 

 no appendix. 



Length 18 mm., width of head 5 mm. 



Fenuile. Hyes not large, the facets equal, with two l)ands 

 (in the male I can see no trace of bands). Frontal callus reddish 

 brown, almost square, a little wider at its base, nearly touching the 

 eyes ; frontal stripe grey, forehead parallel, about five times as long 

 as it is Ijroad, with l^lack markings (probably denuded), the middle 

 callus being a black stri])e not joining the frontal callus ; the vertex 

 blackish ; no ocelligerous tubercle. Antennae at base red (the rest 

 wanting). Frontal triangle grey. Face grey, with white hairs ; 

 beard white ; palpi pale yellow, the second joint long and slender, 

 at the base stouter, gradually tajiering to a i)oint, nearly straight, 

 with a few black hairs. On the abdomen the grey triangular spots 

 are replaced by a l)road strii)e of greyish tomentum, the lilack pul)e.s- 

 cence is longer, the abdomen not so })ointed as in the males. Wings 

 with the first po.sterior cell distinctly narrowed at tlie ai)ex (this 

 is not the case in the male). 



Length 14 mm,, width of head ^| mm. Ricardo, .\nn. Mag. Xat. 

 Hist. (7), xvi, ]). 20T. 



