Palcearctic Region in the British Museum. 201 



example of Therioplectes luridus, Fall., and should be added 

 to the synonyms of Th. luridus. 



Tabanus pulverifir, c? ? , Walker. 



Male (type) from Turkey in Asia (Loftus), 50. 105. 



Three females from the same locality (co-types) are nearly 

 related to Tabanus cordiger, Mg., but belong to a distinct 

 species ; they differ in the following particulars : — 



Antennse wholly red, black at the apex ; frontal callus 

 reddish brown. Coxse and femora reddish yellow, as are the 

 tibiae, only the anterior tibiae with a brown apex ; tarsi 

 reddish brown, all with white pubescence. The underside 

 of abdomen has no median black stripe. The species is 

 much lighter in colour and slighter in form than cordiger ; 

 the four specimens vary in size from 12-14 mm. In the 

 female the band imder the eyes is narrow and yellowish 

 brown. In the male the black hairs on the hind part of the 

 head are not present; the underside of the abdomen is 

 reddish, greyer at the apex. 



Tabanus polygonus, S ? j Walker. 



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 table near autumnalis, 

 spectabilis, 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 rusiicus, Z. 



A redescription may prove of use : — 



Reddish-brown species, with grey median triangular spots 

 on the abdomen. Eyes bare; no long hairs on the hind part 

 of the head. 



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

 divided, the large facets yellowish, extending over more than 

 half the eyes, 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 annu- 

 lated portion not so long as the basal joint ; the ocelligerous 

 tubercle small, brown. Face whitish, with Avhite 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 above and whitish ones below ; scutelluoi 



Ann. c£' Mag. X. Hist. Ser. 7. Vol. xvi. U 



