110 PERCY SLADEN TRUST EXPEDITION 



Thorax reddish-yellow, scutellum with only two strong bristles, pleuriB yellow, 

 mesopleura bare. 



Abdomen reddish-yellow on disc of second segment, reddish-brown on third 

 segment and gradually getting darker till it is brownish-black at the tip. The 

 telescopic ovipositor normal, ending in the usual papillge. 



Legs yellow, with the hind knees and the seam of hind tibise darkened, hind femora 

 with a few long hairs beneath at base, cilia on hind tibite distinct, tarsi simple and not 

 acutely pointed. 



Wings resembling those of aculeipes, the cubital vein simple. Halteres not visible in 

 the specimen examined but probably pale. 



Length just exceeding 1 mm. 



Locality. Seychelles : exact locality unknown. 



7. Aphiochceta limbata Brues, Ann. Mus. Nat. Hung. iii. 546, 1905. (Plate 5, fig. 4.) 



Similar to A. viduata, but differing in its venation and the absence of cilia to the 

 hind tibise. 



$. Head black, fi-ons about as long as wide, dull ; upper pair of supra-antennal 

 bristles strong and wider apart than the small lower pair ; antennse fairly large, brownish- 

 yellow, arista long and distinctly pubescent ; palpi dirty yellow. 



Thorax varying from black with a reddish tinge to reddish-brown, scutellum with 

 four bristles, the basal pair weaker than the apical ; pleurae paler than the thorax, 

 mesopleura bare. 



Abdomen deep dull black, sometimes with a slight reddish tinge, hypopygium 

 greyish, very small, inconspicuous, anal process very small, yellow. 



Legs pale, hind legs darkened about the tip of the femora, middle coxae with a dark 

 streak behind, hind tibise bare, no cilia visible though the usual black seam is present. 



Wings (fig. 4) slightly darkened, venation as in figure, halteres brownish to black. 



$. Like the male, indeed the two sexes are difficult to distinguish unless the female 

 ovipositor is exserted. 



Length about 1 mm. $, to Vb mm. $. 



I feel sure that I have correctly recognised Brues' species and now for the first time 

 describe the male which was unknown to Brues. 



Locality. Silhouette : Forest above Mare aux Cochons, 2. IX. 1908. Mah^ : Cascade 

 Estate, about 800 feet and over; from near Morne Blanc, X. — XL 1908 ; forest of rather 

 stunted " Capucin" trees (Northea), summit of " Montagne Anse Major," about 2000 feet, 

 1. n. 1909 ; Mare aux Cochons district, about 1500 feet, 26. I. — 2. H. 1909. Seventeen 

 males and forty-three females. 



Also known from Matheran, East India (Brues). 



8. AphiochcBta egena, n. sp. (Plate 5, fig. 5). 



?. Blackish-brown species with a tendency to red on the thorax and pleurae; frons 

 somewhat dull, slightly longer than broad, with a tendency to red, bristles normal, under 



