ARGYRAMCEBA. 227 



2. vi. 1913 (Beeson) ; Chapra, Bengal (Mackenzie) ; Allahabad, 

 24. iii, 7. iv. 1906 (Howlett). 

 Type in the Paris Museum. 



174. Argyramceba argentiapicalis, Brun. (PI. Ill, fig. 14.) 



Arqyramccba argentiapicalis, Brunetti, Rec. Ind. Mus. vii, p. 470 

 pi. xxxvii, fig-. 6 (1912). 



$ . Head : frons at level of antennae rather less than one-third 

 width of head, black with black hairs, with which are intermixed 

 on the lower part some dirty greyish scales ; antennas black, 

 normal ; face black, with thick black bristly pubescence and some 

 greyish scales ; proboscis dark ; mouth-opening very narrowly 

 pale; occiput wholly black. Thorax blackish or blackish grey, 

 with very short black pubescence and with mainly black bristly 

 hairs on anterior margin, around the wings, and about the shoulders 

 and pleurae ; a few grey hairs intermixed adjacent to the head. 

 Abdomen black, shortly black pubescent ; a spot formed of silvery- 

 white scales towards the sides on the hind borders of 1st and 2nd 

 segments ; a few intermediate scales suggest the possibility that in 

 some specimens the whole hind border of at least the 2nd segment 

 may be similarly scaled ; the tip of the abdomen (two segments) 

 covered with very conspicuous, elongate, shining silvery-white 

 scales, which are sparser or nearly absent on the median line ; 

 venter black, black pubescent ; genitalia comparatively prominent, 

 dull brown, consisting of a pair of large lamellae and other parts ; 

 anterior corners of abdomen with copious greyish-white hairs; 

 sides with black hairs. Legs : femora black, bearing a little sheen 

 through the presence of very small, greyish, closely-impressed 

 scales ; tibiae and tarsi reddish brown ; the usual pubescence. 

 Wings clear, more than the basal half dark brown ; the line of 

 demarcation, which is emarginate at each of the veins it crosses, 

 running from the tip of the 1st longitudinal vein to the middle 

 (on wing-margin) of the posterior cell, thus passing distad of the 

 base of the 3rd vein and the discal cell. Anal cell closed just 

 before or actually on the wing-margin ; the endings of the 

 4th longitudinal vein are liable to variation, as in the type there 

 is an extra cell formed below the discal cell (in one wing only), 

 caused by the upper prong of the lower branch of the 4th vein 

 curving towards and joining the lower prong, thus closing the 

 4th posterior cell. In the dark part of the wing are small lighter 

 yellowish spaces irregularly disposed ; halteres black. 



Length, 5-7 mm. 



Described from three $ $ in the Indian Museum from Maha- 

 balesh\var,Satara District, 4200 ft., Bombay Presidency, 13-16. iv. 

 1912 (Gravely}. 



175. Argyramceba instituta, Walk. 



Anthrax instituta, Walker, Ins. Saund., Dipt. pt. 3, p. 183 (18o2). 



5 . u Black, narrow, head clothed above with brown hairs, in 



front with tawny hairs; chest beset with black bristles; breast 



