39S GERTRUDE RICARDO. DIPTEREX II. 



same, with grey tomentum- Legs reddish brown with black pubescence, the fore coxae with 

 grey tomentum. Wings large, brown, paler at the apex and on posterior border, with the usual 

 white streak between the first and second longitudinal veins, ail the veins reddish yellow. 



18. Tabaniis illustris n. sp. 



Type (female) in Brit. Mus. Coll. from Ivaka River, Dutch New Guinea (A. J. Woollaston), 

 British Ornithological Union Expédition; and other females in Dr. Lorentz's Coll. from Heuvel 

 Bivak, Dutch New Guinea. 



A black species at once distinguished by the shining reddish thorax. Legs," antennae 

 and palpi blackish. Wings clear. Length 17 m. m. 



Face covered with greyish white tomentum, and with some black pubescence. Palpi 

 reddish but this colour only appears on the inside, on the outer being obscured by grey 

 tomentum and close black pubescence, stout at base ending in a long point. Beard brown. 

 Antennae blackish, with a very distinct tooth, the first two joints with black pubescence. 

 Subcallus covered with yellowish brown tomentum which in some of the spécimens is confined 

 to a border round base of antennae. Forehead blackish with some grey tomentum, slightly 

 narrower anteriorly, seven times as long as it is broad anteriorly. Frontal callus dark reddish, 

 large, oblong, not quite reaching the eyes, with a long linear extension. Thorax reddish 

 shining, with however some greyish tomentum mest noticeable on the anterior half of dorsum, 

 sides with black pubescence, breast black with grey tomentum and -black pubescence. Scutel- 

 luin identical with thorax. Abdomen black with bluish grey tomentum on basai segments, the 

 pubescence short, black, underside the same. Legs black, knees slightly yellowish, pubescence 

 black. ]Vings clear, tinged yellowish, brown on fore border between the costa and the first 

 vein, the long stigma the same colour, veins brown, appendix présent. 



Three of the females vary in the following particulars which however hardly seem 

 spécifie différences. The beard is whitish, the pubescence on fore coxae the same colour. 

 Palpi appear some what stouter and shorter, with the point shorter. Forehead velvety black 

 and the frontal callus blackish, pubescence on forehead blackish, pubescence on breast white. 

 Wings brownish with the apex and posterior border paler, and pale streaks and centres in 

 the cells. 



19. Tabanns scrus Walker. 



Proc Linn. Soc. Londen, VI, p. 20 (1862). 



Ta Imn us facilis Walker, Proc. Linn. Soc. London, VII, p. 206 (1864). 



Atylotus laglaizei, Bigot, Mem. Soc. Zool. de France, V, p. 673 (1892). 



Type of serns (female) from Island of Misol, not from Ceram as stated in description, 

 another spécimen labelled séries is a wholly différent species, with legs entirely black. 



Type of facilis (female) from same place and another spécimen with it, from New Guinea. 



Type of laglasei (female) from Island of Waigëu. 



Three females from same place (Dr. L. F. de Beaufort's Coll.). One female from Bivak Island 

 in Dr. Lorentz's Coll. and two females in Brit. Mus. Coll. from Island Misol. 



A species nearly related to Tabanns atrohirtus Ricardo, from Ceylon (Records of 

 Indian Muséum, IV, N°. VI, p. 209, 191 1), but the hairs on breast, especially anteriorly, are 



