222 Records of the Indian Museum. [\"OL. IV, 



a longitudinal furrow in the middle, and is prolonged above as a 

 stripe-shaped line on the grey narrow frontal band. Eyes naked 

 with ver}- fine network. Antennae red-yellow, the two first joints 

 projecting above tooth-like ; the third at the base with a small 

 tooth ; at the apex brownish. Palpi grey-brown ending in a point, 

 proboscis black-brown. Thorax, scutellum and abdomen brown- 

 black, slighth^ shining. Thorax with short pale pubescence, the 

 shoulders and the triangle at base of wings brown ; breast sides 

 black-gre}^ with whitish pubescence ; abdomen with some trace 

 of reddish segmentations ; under side with distinct grey segmenta- 

 tions. Coxae and femora black, the fore coxae with whitish grey 

 tomentum and pubescence of same colour ; knees and tibiae pale 

 red-yellow ; on the fore legs the apex of tibiae as well as the whole 

 tarsi black, on the hind legs the first tarsal joint red-3^ellow with 

 the apex and following joints black-brown. Halteres yellow. 

 Wings hardly a little greyish ; the stigma marked by an almost 

 unnoticeable browai- yellow shadow ; veins normal. This species 

 seems related to Tahanus pusilhts, Macq. (Dipt, exot., i (i), 127, 12), 

 from China, which has also a black subcallus, but the palpi are 

 described as pale yellow and the legs as uniformly red-yellow." 

 V. d. Wulp, Sumatra Exped. Dipt., p. 18. 



' ' I need only add to m^^ original description that the eyes 

 are bare and of a bronze colour, with small facets ; even after having 

 been moistened they show no trace of cross-bands. In these Javan 

 specimens the yellow colour of the legs is so pale that it may be 

 called whitish. Two females from Ambarawa in Java (Ludeking)." 

 V. d. Wulp, Notes Ley den Museum, vii, p. 71 (1885). 



Van der Wulp evidently re-described the same species as 

 Walker had described years before, but the colour of the abdomen 

 as stated by him hardly applies to the specimens in Brit. Mus. 

 coll. and in London School Tropical Medicine coll., which 

 range from yellowish at the base becoming darker towards the 

 apex, to reddish brown becoming blackish at the apex, the pubes- 

 cence on dorsum black but not very thick, the segmentations in 

 fresh specimens fringed with yellow hairs. The tibiae whitish or 

 very pale yellow. The wings hyaline but very faintly tinged 

 yellowish on fore border, the costal border yellow. 



The forehead is narrow nearly ten times as long as it is broad, 

 about a third narrower anteriorly, the frontal callus narrow, long, 

 blackish, reaching the eyes with a linear extension, forehead covered 

 with grey tomentum. The palpi vary from usually yellow with 

 black pubescence to almost black with grey tomentum, swollen 

 at base, ending in a rather fine point. Length from 9 — 12 mm. 

 The male type (now headless) has the abdomen almost wholly 

 yelloNv, underneath dark at the apex. 



The male from Singapore has the large facets of the eyes distinct, 

 reaching across almost as far as the posterior border of the subcallus, 

 the small ones are continued as a narrow border to the vertex. 



This species may usually be distinguished from those specimens 

 of Tahanus ceylonicus, Schiner, which have the abdomen almost 



