187 



greyer with white pubescnce. Underside of abdomen similar but almost 

 devoid of pubescence. Legs reddish yellow, the apices of fore tibiae 

 and the tarsi blackish, the outer tarsi more or less brown, pubescence 

 nale yellow on the coxae and femora, chiefly black elsewhere. Wings 

 clear, the veins very pale yellow and stigma hardly noticeable, no 

 appendix. 



Male. Similar but in some of the specimens, owing probably 

 to denudation, black median markings or a black median stripe appear. 

 Abdomen with very little yellow pubescence, almost bare. Eyes large, 

 convex, the large facets occupying fully two-thirds of the surface of 

 eyes, the small ones reaching to the vertex as a narrow border. 

 1'alpi pale yellow with yellow pubescence and black pubescence on 

 apex. Frontal triangle and subcallus coloured alike. 



This species might possibly belong to the subgenus Atyloins, 

 as the paratype in the British Museum has pubescent eyes, though the 

 pubescence is almost rubbed out on the anterior part of the body. I have 

 no specimens. It is known that this species occurs in Formosa (Takao, 

 July ist., 1907, and Kagi) and Hongkong. 



5. Atylotas angnsticornis, Loew. 

 Tabanus nngusticornis, Loew, Wien. Ent. Monatschr., II, p. 104, 



[858; Ricardo, Rec. Ind. Mus., IV, p. 237, 1911. 

 Ashy grey to yellow species. Abdomen darker at the base, on each 

 side with luteous spots. Eyes short haired. Forehead very wide, 

 with no smooth callus. Antennae ochraceous, narrow, the third joint 

 angulated above. Legs obscurely luteous, base of anterior femora, 

 apical half of anterior tibiae, anterior tarsi wholly and four last joints 

 of posterior tarsi black. Wings brownish cinereous, stigma and veins 

 dark grown, no appendix. Length of body 5^ lines. Length of wing 

 5 lines. 



Face yellow pollinose and yellow haired. Palpi yellowinsh. 

 clothed with pale yellowish and black hairs. Antennae : first joint 



