40Ô GERTRUDE RICARDO. DIPTEREN II. 



Face covered with greyish white tomentum, some brown pubescence in centre and on 

 cheeks. Palpi yellow, the second joint long and slender ending in a point, with some short 

 black pubescence. Beard white. Antennae reddish, the first two joints yellow with black hairs, 

 in shape similar to those of Silvius vittatus n. sp. Forehead broad, a third narrower anteriorly, 

 covered with yellowish brown tomentum, the frontal callus dark brown, clubshaped, almost 

 reaching the vertex. Eyes as in above named species. Thorax covered with yellowish brown 

 tomentum and with thick, though short, blackish pubescence, rather longer at the sides; breast 

 covered with greyish tomentum and white hairs. Scîitellitm same as thorax. Abdomen brownish, 

 yellowish brown on the first two segments and on the anterior border of the third, the 

 segmentations of the segments, with the exception of the first and often of the second, paler, 

 covered with yellowish hairs, pubescence on dorsum elsewhere is black and rather dense ; 

 underside yellowish with grey tomentum. Legs yellowish, apices of tibiae and the tarsi blackish 

 brown. Wings clear, stigma and veins brown. 



Chrysops Meigen. 

 Nouvelle Classification, p. 23 (1800). 

 The only species as yet recorded from the Australasian Région are two, viz. 



Chrysops testaceus Macq, Dipt. exot. Suppl. IV, p. 342 (1849), from Tasmania. 



Chrysops albicinctus v. d. Wulp, Tijd. v. Ent. XI, p. 103, PI. III, fig. 6 (1868); Ost. Sack., 

 Ann. Mus. Civ. Gen. XVI, p. 418 (1880); Ricardo, Ann. Mag. Nat. Hist. (7), IX, p. 371 (1902); 

 from Island Salawati and New Guinea. 



1. Chrysops albicinctus v. d. Wulp. 



One female from Mimika river Dutch New Guinea (A. F. R. Woollaston) British Ornitho- 

 logical Union Club, in Brit. Mus. Coll., and females from Bivak Island, Lorentz River, Rivier- 

 kamp, Alkmaar, in Dr. Lorentz's Coll. 



A black species with a pale yellow band on the second segment of abdomen and yellow 

 markings on sides and posterior border of thorax. Antennae reddish, paler at base. As OSTEN 

 SACKEN remarks it differs from the ordinary type of Chrysops by the broad flattened third 

 joint of antennae and stouter tibiae. It is différent in the wing from C. pelhicidus F. with 

 which he compares it, having a broad transverse band with a hyaline sinus in the fifth posterior 

 cell, and an apical spot, the apex beyond being grey, with the dark colouring in foreborder 

 and in basai cells, reaching to about two thirds of the length in the first one, and half the 

 length in the second basai cell. 



