LAMB—DIPTERA: HETERONEURIDA, ORTALIDA, TRYPETIDA, SEPSIDA, ETC. 359 
Milichide. 
Mrticuta Meigen, System. Beschr., vi. (1830), 131. 
55. Milichia superba, n. sp. (Fig. 40 and Plate 21, fig. 52). 
This species is one with entirely silvery abdomen. 
¢ Head. Entirely black. Top view :—frons entirely covered with dark somewhat 
olivaceous pollination: lunular arch shining black. The area surrounding the brown 
ocelli is not quite so pollinated, but is a little shining, as are two narrow triangular 
eye-margins down to front f. 0. Two f. 0. very slightly divergent from centre line: front 
forward, hind backward bent; below front one a row of smaller orbital bristles 
alternately smaller and larger. Parallel 1. v., div. o. v.; sub-parallel p. v.; oc. stout, 
inserted between ocelli; on ocellar area and just behind it are two small div. pairs; row 
of small bristles along orbital stripe from inside v. to top f. 0. Scattered frontal bristles 
two pairs of which are rather striking, a forward crossed pair over frons, a backward 
crossed pair about middle; between these is a third pair and others. Front view :— 
antenne separated at base by a projection of the black lunule: two smooth black long- 
oval fover with narrow ridge between; mouth emarginate, the centrally projecting part 
of the lip is dark orange pollinated. Side view (Plate 21, fig. 52) :—second joint of 
antenne rather elongate with front bristles, pollinated with grey ; third joint black, the 
arista brown with just perceptible pubescence under high power (x 45), the basal joints 
abruptly thicker than flagellum ; three stout vibrissee with stout following row and similar 
bristles on hind jowl. Palpi black, stout and somewhat flattened laterally, spiny. 
Tongue black and spiny, recurved tip just perceptibly orange toned. The eyes occupy 
nearly the whole view, the margins below mid-line being wider than above. 
Thorax. Black, somewhat suffused with ochreous pollen. Dorsum covered with 
bristles which are somewhat variable in length, so that it is impossible to discriminate 
exactly between any possible front dorso-centrals and the other bristles: the hindmost 
pair of these is however very large, and just behind them is a smaller pair of prescutellars ; 
h., n. p. and presut., three stout st. pl., but the supra-alars have been destroyed by the side 
pinning. Scutellum as thorax with two stout basal and two stout crossed terminal 
bristles. Metanotum rather more pollinated. Wings 
as Fig. 40. The costal slit well marked with two 
short terminal spines: the costa is black bristled along 
margin to just beyond the second vein; thickened to 
fourth but only ciliated. Halters all shining black. 
Legs all black, femora all with two inferiorly-pointing 
rows of bristles, those on the hind legs the longest. 

Fig. 40. Milichia superba, n. sp. x 20. 
Abdomen. All covered densely with silver ex- 
cept first segment: the second segment nearly as long as the next two, these and the 
last sub-equal. The margins edged with minute black bristles, the terminal segment with 
long bristles. The silver extends well over the sides on to the belly, but less so on the 
base of the second segment. 
LIBRARY) 
} 2 
= 2 

