ABGYHAMCEBA. 225 



narrowly open in type $ : halteres dark brown, with dull creamy- 

 yellow knobs. 



Length, 6|-7inm. 



Described from three specimens in rather good condition : 

 Pallode, Trivandrum, Travancore, 15. xi. 1908 (Annandale), 

 type c? ; Calcutta, 1. vi. 1909, type $ ; Sylhet (Maj. Hall) ; 

 Chapra, Bengal. 



Types in the Indian Museum. 



This species evidently bears some resemblance to de Meijere's 

 fallux, from Java, and was recorded erroneously by me as that 

 species (Eec. Ind. Mus. ii, p. 449, and iii, p. 221). 



173. Argyramceba duvaucelii, Macq. (PI. Ill, fig. 13.) 



ArqyramcRba duvaucelii, Macquart. Dipt. Exot. ii. 1. p. 63, pi. xx. 



tig. 7 (1840). 

 Anthrax- duvaucelii, Brunetti, Rec. Ind. Mus. ii, p. 452 (1909), and 



iii, p. 219 (1909). 



cJ $ . Head : frons at level of antenuaB one-third the width of 

 the head, narrowing at vertex to one-third of this width ( c) or 

 about half this width ( $ ), blackish grey, with short soft black 

 hairs ; face with moderately long and thick white hairs ; mouth- 

 border very narrowly yellow; proboscis dark brown, shining, 

 hairy. Antennae black, with a slight greyish-white shimmer ; 

 first two joints with black bristles ; third bare, prolonged into the 

 usual style, which is pale at the tip, the pencil of hairs quite 

 distinct. Vertex of head with a distinct but short and deep 

 indentation, from which a central dark grey hairy protuberance 

 arises, bearing the red ocelli, placed closely together. Thorax 

 dark cinereous, the dorsum with sparse yellowish short hairs round 

 the edges ; anterior part with a dense fringe of very narrow long 

 greyish-white scales, intermixed behind with long soft black hairs, 

 these latter continuing more or less over the whole dorsum, but 

 rather shorter ; sides of thorax with long thick greyish-white scaly 

 pubescence, thickest and most scaly below the humeral region, 

 thinner, shorter, and whiter posteriorly, and extending somewhat 

 sparsely above the insertion of the wings. Scutellum blackish 

 cinereous, covered with ratherspar.se but long soft black hairs and 

 with traces of short yellow hairs around the whole scutellum ; a 

 row of stiff hairs on posterior margin. Several strong black spines 

 below the edge of the dorsum anterior to insertion of wing; the 

 posterior calli also moderately conspicuous and bearing a few stiff 

 long bristles. Abdomen blackish grey ; 2nd segment distinctly 

 but not greatly longer than the five remaining ones ; the whole 

 dorsum apparently covered with small yellowish-white or quite 

 white scales, which may be thickest at the bases and posterior 

 margins of the segments ; the whole surface is also covered 

 lightly with moderately long soft black hairs, and there is a 

 bunch of long whitish scaly pubescence at each side of the first 

 segment, which is continued along the sides of the abdomen. 

 Venter blackish, with short white hairs ; longer white pubes- 

 cence towards the base, and the last segment (in the 6 only) 



Q 



