1922.] 187 



A number of other species of JParahi/bos have been described b}^ 

 Bezzi and Meijere from Formosa and Java, and the first author has 

 expressed a doubt as to the genv;s being really distinct from Syneclies. 

 In the Seychelles specimens, however, the hind femora are particularly 

 slender and the arista certainly supra-terminal. 



TACHYDROMINAE. 



The two apparently undeseribed species of Drapetis included in the 

 collection both belong to the group with distinct jowls between lower 

 eye-margin and palpi, a bristle beneath second antennal joint, the four 

 anterior tibiae with a pair of bristles at tip, and hind tibiae with a strong 

 apical projection behind. 



3. Drapetis basalis, sp, n. 



2 . Frons dull brownisli-black, rather wide — ahiiost as wide opposite front 

 ocellus as third .antennal joint is deep — narroAving to half this width in front. 

 Face linear. A single })air of ocellar and a single pair of vertical bristles, the 

 Intter wide apart (nearly half the width of head). Occiput dusted greyish. 

 Antennae short, basal joint very short and inconspicuous, second about as long- 

 as de3p and with a single black bristle beneath at tip, both joints yellowish, 

 third joint brownish-black, ovate (ab.nost circular) with a very long practically 

 bare arista. Palpi ovate, yellowish, with a single dusky hair at tip. Thorax 

 (including pleurae) mainly shining black, the disc clothed with short yellowish 

 hairs ; two noto-pleural, one supra-alar, one postalar, a single pair of prescu- 

 tellar dorso-central, and a pair of scutellar, bristles. Scutelluni with, in 

 addition, a pair of basal, and a still shorter pair of apical, hairs. The bristles 

 all black. Abdomen black, brightly shining throughout, third segment the 

 longest, fourth short, all very sparsely haired. Legs yellowish-brown, some- 

 what variable, usually rather darlcer on hind tarsi. All femora with a small 

 black preapical bristle in front, blind tibiae with two short apical bristles in 

 front, and 2-3 long curved fine hairs beneath towards tip. Basal joint of hind 

 tarsi with a small autero-ventral bristle at middle and another at tip. Wings 

 faintlv yellowish with yellowish-brown veins, and a distinct bristle at base of 

 costa. Radial, cubital, and discal veins almost parallel and slightly and evenly 

 upcurved (only the cubital vein faintly recurved just before tip). Distance 

 between cross-veins equal to about three-fifths length of last section of postical 

 vein. Halteres yellow. 



Length about 2 mm. 



Loc. Seychelles, Mahe : Cascade Estate, 800-1000 ft., x.l908- 

 i.l909, 3 $ . 



4. Drapefis auf/iisfafa, sp. n. 



(^ . Ocellar triangle and frons much narrower than in basalis; the single 

 pair of ocellar and vertical bristles yellowish, the latter closer together (less 



