LAMB—DIPTERA: HETERONEURIDA, ORTALIDA, TRYPETIDAL, SEPSIDA, ETC. 361 
Thorax. Black, slightly shining, very finely covered with minute lighter pollination, 
dise covered uniformly with small bristles. The last pair of d. c. present and almost in 
the same cross line with them are two small prescutellars. The specimens are not in 
very good condition, but one can make out p., n. p., presut., and two on the post-alar 
calli. The scutellum is coloured like thorax, bare with two basal and two slightly 
converging terminal bristles. Metanotum, shining, somewhat pollinated in one specimen. 
Wings, Fig 41, glassy with quite pale veins: costa with usual two-spined break, 
minutely bristled to just beyond the junction with 
the second vein which is bent along costa in the 
usual way ; it is then slightly thickened to the end 
of 4. Halters with orange knobs and darkened 
stalks. Legs black except for the orange tarsi, the 
last 4 tarsal joints are suffused in part, giving a 
spotted appearance to the feet: there are no ‘ A, oe rh 
s : : : Fig. 41. MMilichiella tristis, n. sp. x 30. 
specially outstanding bristles on the legs, the bristle 
clothing being as usual more or less in lines, except for a terminal spine on the mid- 
tibie. 
Abdomen. Somewhat shining black brown. In oblique bright light, one might say 
it was the colour of dull oxidized copper. It is dorsally covered with bristles except for the 
basal half of the 2nd segment ; this is about the same length as the 5th, each is about as 
long as the 3rd and 4th together. Terminal segment with a few long bordering bristles. 
There is no sign of any silvery or truly shining parts at all. 
The female is much like the male; the relative sizes of 2nd to 5th segment of 
abdomen is about the same in one of the two @, but in the other the mid segments are 
relatively longer; this is probably due to the extension of the body with eggs; in both a 
fleshy annulate ovipositor is visible. 
Size, about 14 mm.; wing, about 1°7 mm. 
Locality. Seychelles, Mahé: Cascade Estate, at or above 800 feet, 1908—9. 
Another species of the genus was recorded from the Seychelles by Giglio Tos (Ann. 
Soe. ent. France, lxiv., 1895, p. 367) as M. argentea Fabr.: this has been identified as 
being distinct from that species and is now called M. tos: Becker (Ann. Mus. Nat. Hung., 
v. (1907), p. 536). 
Eccopromma Becker, Ann. Mus. Nat. Hung., v. (1907), p. 540. 
This genus was founded by Becker for certain Chilian species which differed from 
Milichiella mainly in the very profuse and stout bristles on the thorax. Two males from 
Mahé can be referred to a new species of this genus. 
58. EHccoptomma solitarium, n. sp. (Fig. 42 and Plate 21, figs. 54, 59). 
¢ Head, black. Top view:—frons narrowing much from vertex to forehead, 
being about 4 times as broad behind as in front. The eye-margins and minute ocellar 
triangle are shining, the rest is most elegantly and minutely rugulose, two sets of the 
minute pits forming lines from outside the i. v. to the lunule; there is a minute furrow 
