404 R. OSTEN SACKEN 



(with brown knob in the specimen from Java). Legs yellow, a 

 faint brown ring a short distance before the tip of the femora; 

 extreme tip of tibiae and tarsi infuscated. Wings with a pale- 

 yellowish tinge and with numerous brown clouds along the 

 veins ; these clouds are long and narrow and present the ap- 

 pearance as if the whole vein was clouded , but with longer or 

 shorter lighter colored interruptions ; the clouds on the crossveins 

 are larger and rounder ; some illdefined , interrupted clouds 

 along the hind margin. Venation : the auxinar}?- vein reaches to 

 the middle of the inner marginal cell and the crossvein is 

 close by its tip; the first longitudinal vein is incurved towards 

 the costa ; the marginal crossvein is rather remote from the 

 tip of the first longitudinal vein : praefurca oblique and very 

 short ; discal cell long and narrow ; the second posterior cell 

 longer than the third , as its base nearly reaches the middle of 

 the discal cell. 



Hah. Mt. Singalang, Sumatra (Beccavi July 1878). A single 

 male. A female from Java (Midler) in the Leiden Museum. 



Teucholabis bico'or n. sp. (/. Black, shining, collare yellow, 

 tip of wings and a crossband in the middle, blackish. Length : 

 5-6 mm. 



Head black, upper part of rostrum brownish-yellow ; antennae 

 black, yellowish at base ; collare and fore coxae bright yellow. 

 Thorax black, shining ; abdomen, including the genitals , black. 

 Stem of halteres blackish, knob yellow. Legs : femora yellow , 

 except the tip, which is black, tibiae yellowish brown, with a 

 black tip ; tarsi blackish brown. Wings with a yellowish tinge ; 

 the tip blackish, this color occupying a little more than half 

 the distance between the tip and the central crossveins ; a ra- 

 ther narrow blackish crossband runs between the costa and -the 

 hind margin, where it covers the tip of the seventh vein. 



Hah. Mount Singalang, Sumatra, July 1878 (Beccavi); a single 

 male. — Another specimen ( J') , also from Sumatra (Mullev) 

 in the Museum in Leiden ; it has the whole head brownish- 

 yellow. 



