112 PERCY SLADEN TRUST EXPEDITION 



The male of this species does not appear to be represented in the collection, though 

 the possibility of its having only two scutellar bristles has not been overlooked. 



Locality. Mahe : Cascade Estate, about 800 feet and over, collected by H. P. 

 Thomasset and Hugh Scott, X. 1908 — I. 1909 ; Mare aux Cochons district, about 

 1500 feet, 26. I.— 2. II. 1909; Cascade Estate, about 800—1000 feet, 1909. Twenty- 

 five females. 



10. Aphiochceta innocens, n. sp. (Plate 5, fig. 7). 



%. Frons greyish-black, dull and longer than broad, frontal bristles normal, upper 

 pair of supra-antennal bristles wider apart than the smaller lower pair, antennae small, 

 reddish-brown, palpi yellow. 



Thorax black with a tendency to red, scutellum with four bristles though the basal 

 pair are weaker, mesopleura bare. 



Abdomen black, slightly shining. 



Legs yellow, hind pair slightly brownish, cilia to hind tibiae quite strong for so small 

 a species. 



Wings (fig. 7) with costa less than half the length of wing and with short ciliation, 

 subcostal vein long, ending near the fork. Halteres yellow. 



Length about 1 mm. 



Locality. Silhouette: Mare aux Cochons and forest immediately above, IX. 1908; 

 Mah6 : from near Morne Blanc, X. — XL 1908 ; Mare aux Cochons district, about 

 1500 feet, 26. I. — 2. II. 1909 ; Anonyme Island, from grass, ferns, trees, etc., I. 1909. 

 Five females. 



11. AphiochcBta extans, n. sp. (Plate 5, fig. 8). 



$. Head black, frons narrow, being longer than wide, dull and inclined to be reddish- 

 brown, the two bristles of the lower frontal row on each side of the frons are placed on&J 

 above the other almost equidistant from the eye margin, upper pair of supra-antennall 

 bristles larger and wider apart than lower pair, antennae small, reddish-brown, palpi and! 

 proboscis yellow. 



Thorax reddish-brown, paler about the post-alar calli, scutellum reddish-brown with! 

 only one pair of bristles, pleurae yellow, mesopleura with one very long stout bristle and! 

 numerous minute ones, metanotum reddish-brown. 



Abdomen with the first two segments reddish-yellow, with reddisli-brown hind I 

 margins, narrow on the first segment but widening into a triangular central stripe on the! 

 second segment : this segment bears 3 — 4 bristles at each hind corner as in ruficornis Mg.,T 

 third to the fifth segments dull blackish-brown with reddish hind margins spreading 

 upwards on to the disc about the middle, sixth segment dull black with a reddish hind 

 margin bearing 3 — 4 longish bristles, hypopygium dark coloured, almost entirely hidden! 

 beneath the sixth segment, anal organ long and pale. 



Legs yellowish but hind femora darkened above and at the tip, the hind tibiae I 

 darkened along the seam and at the tip, hind femora with a few long curved hairs beneath 

 at the base, hind tibiae with a cilia of about 8 strong bristles, middle tibiae- with a cilia 

 each side of the seam. 



