LAMB—DIPTERA: HETERONEURIDA, ORTALID®, TRYPETIDA, SEPSIDA, ETC. 353 
Abdomen. Dark shining orange-brown, sparsely bristled; the narrow margins and 
the belly, paler. 
Size, 25 mm. ; wing, about 24 mm. 
Localities. Seychelles. Félicité, XII. 1908. Mahé: Cascade Estate, ca. 800 feet ; 
marshy ground near sea-level at Cascade, II. 1909. 
AstEIA Meigen, System Beschr., vi. (1830), 88. 209. 
49. Asteia mgra, n. sp. 
A single specimen of an exceedingly dark form, quite distinct from any other ; it is 
all shiny black except the abdomen and parts of the legs: the wings are rather shorter 
in proportion than usual. 
Head. Entirely shiny black; face rather translucent, a little silvery beneath 
antenne ; antenne black, slightly rufous centrally inside and outside, about four upper and 
four lower pectinations to black arista; one pair f. 0., inner and outer v., ocellar, stout 
long vibrissee. Palpi black, tongue rather orange. 
Thorax. Entirely bare shiny black including all the pleura, extremely indistinctly 
and distantly pollinated, Ist and 2nd d.c., other bristles rather damaged. Wings slightly 
yellowed with yellow veins; costal fringe very fine, distinct, especially on anal angle. 
Halters black. Legs: front, coxa and femur black, tibia black at base, tarsi yellow. 
Middle cox pale, femur black except at ends, tibia black at tip, tarsi yellow ; hind coxee 
pale, femur black-ringed on distal third with pale knees, tibia with a narrow. black 
ring near base, tarsi pale. 
Abdomen. Entirely orange. 
Size, 1 mm.; wing, 14 mm. 
Locality. Seychelles. Mahé: from near Morne Blanc, X.—XI. 1908. 
Geomyzide. 
CurtroMYIA Robineau-Desvoidy, Myodaires, 621 (1830). 
There is a rather unsatisfactory set of some 17 specimens that can be referred to this 
genus. They all (with one exception) possess the crossed frontal bristles, and that 
specimen agrees absolutely in other characters with several others. The facies of the 
species is unlike that of the European ones: the acrostichal rows are indistinguishable 
from the general thoracic dorsal bristles which are all small and dark instead of long and 
pale. The large hind d. c. are present, but the forward row of smaller ones is absent. All 
the macrochetes are shorter and darker. In view of the known diversity of the cheetotaxy 
in this genus (see the specific descriptions in Becker's paper on Peletophila, Zeit. fiir Syst. 
Hym. und Dipt., iv. pp. 131—133) it is not thought desirable to make a new genus for 
the present species. 
50. Chiromyra dubia, n. sp. (Fig. 35 and Plate 21, fig. 44). 
There are 11 specimens of two sexes which appear to be best treated as one species, 
although they differ in abdominal colour. There are no perceptible differences in 
structure. 
? Entirely orange and yellow. 
