384 TABANID.^ 



apical half though with a more brownish orange tinge than in the male except 

 at the tip, but sometimes even the front trochanters and all the front femora 

 even to the base are reddish orange, while the posterior femora may be only 

 indefinitely greyish black about the base, and on the other hand the posterior 

 femoia are sometimes more than half blackish. Pubescence on the front 

 femora sometimes almost all black, less obvious on the tibiae, but the black 

 dorsal fringe all down the hind tibiae fairly conspicuous. 



Wings, squamjB, and halteres as in the male. 



Length about ] 3 mm. 



This species varies but little in the British specimens I have seen, but 

 apparently continental specimens vary in the amount of orange coloring on 

 the abdomen and to a small extent in the practical absence of any blackish 

 coloring at the base of all the femora. It is easily distinguished from 

 A. rusticus and A. latistriatus by its gold-tinted appearance and its paler 

 femora. 



A.fulvus is not uncommon in the New Forest, and I have records from 

 North Devon (Bideford), Essex (Colchester), Norfolk (Norwich), and 

 Berkshire (Tabney Wood), from June 14 to August 17. In Scotland it 

 has occurred at Aberfoyle and Banchory, and in Ireland Colonel Yerbury 

 has taken it at Cllengariff, Ken mare, and Loo Bridge. It is recorded from 

 Scandinavia to Southern Europe (including Spain) and Asia Minor. 



Synom/my. — Walker professed to recognise in this species tlie Tahanus alpinus of 

 Schrank, Fauna Boica, iii., 2534 (1798), but his interpretation has not been accepted 

 by others. There is a mistake in Bezzi's Katalog in referring the name alpinus to 

 Panzer, as Panzer correctly named and described A. rustims in his Faun, germ,, xiii., 

 21, There are possibly other older names for this species, such as Tcib. ferus by 

 Scopoli (1763) or T. sangnisorha by Moses Harris (1776), but the descriptions are too 

 vague for recognition. 



8. A. rusticus Fabricius. Clreyish brown species, with two dark 

 bowed stripes down the abdomen which are not indentate at the fore- 

 margins of the segments. Femora in both sexes greyish black with only 

 just the tip orange. 



A rather small species, easily distinguished (except from 

 A. latistriatus) by the two dark stripes down the abdomen 

 which are separated by an equal broad uninterrupted grey 

 stripe. 



This description of the male is drawn up from one possibly worn 

 specimen. 



S. Rather like A. fulvus, but greyish brown instead of golden hued. Head 

 large, forming just a semicircle anteriorly (when seen from above) with 

 the hindmargin slightly concave, broader than the thorax, and always longer 

 and usually wider than in the female, but the head of the female varying mucli 

 in size ; face and side-cheeks whitish yellow with a faint tinge of greenish 

 grey, beai'ing fine short whitish yellow pubescence which becomes longer 

 on the jowls and about the mouth ; back of the head pale ashy grey and 

 deeply hollowed out behind the eyes, and with only a microscopical greyish 

 yellow postocular fringe which however grows slightly longer on the upper 

 part ; ocellar sjiace exceedingly small, pale brownish yellow, and bearing on 

 the back part some short pale brownish yellow pubescence ; frontal triangle 

 large, whitish with a grey tinge, and depressed on the middle part. Palpi 



