342 , PERCY SLADEN TRUST EXPEDITION 
antennal joint rather swollen, with spines, two in front being long; small oval third joint, 
pollinated, but hardly pubescent; both joints dark, but sometimes with slight orange 
tone ; arista with five rays on top, two below and one terminal; inner row short, but quite 
evident. Stout pair vibrissze, followed by mouth bristles which are moderately strong, 
approximating to small extra vibrissee; hind jowl with a few bristles. Post-orb. row well 
developed, the last one or two (behind outer v. b.) being quite stout and converging to 
mid-plane of head. Palpi clubbed, bristly, black; tongue blackened with paler tip. 
Thorax. Entirely black, moderately shiny, dorsum entirely covered with regular 
rows of small dark bristles: two pairs d. c., inserted rather close together, the front pair 
smaller ; the small discal bristles form 8 acrostichal rows just in front of the d.c., and 6 
between them: small but evident prescut. pair; two h., usual n. p., presut. and wing 
bristles ; three sternopl. and several much smaller ones. Scutellum bare, duller black, 
very minutely granulate, almost dull brassy; terminal bristles just touching at tips, 
small side bristles inserted midway along sides. Wings, Fig. 26, translucent with 
yellow veins: costa to 4th, the fine black bristling ending a little before 3. There 
is a distinct costal slit, but no callosity. Halters dusky-brown. Legs: except tarsi, 
entirely brownish-black, tarsi yellowish-white, but the dark bristles render this less 
conspicuous. Front femora with only three moderate bristles of lower row; no con- 
spicuous hind row. Mid-tibize with moderate spine and few other small crowning bristles; 
preapicals small. 

Fig. 26. Drosophila caliginosa, n. sp. x 45. 
Abdomen. Same colour as thorax, about two irregular cross rows of discal bristles, 
and a marginal row of somewhat longer ones: these bristles appear black, but when 
reflecting light are paler than the ground colour. 
Size, a little over 15 mm. ; wing, a little under 15 mm. 
Localities. Seychelles. Mahé: Cascade Estate, 800 feet or above; marshes on 
coastal plain at Anse aux Pins and Anse Royale, I. 1909. 
38. Drosophila pallipes, n sp. (Fig. 27 and Plate 20, fig. 29). 
There is a single male specimen of this species. 
Head. Eyes with profuse short pubescence. Top view :—frons with broad black 
shining eye-margins and a well-marked large black shining frontal triangle, between the 
eye-margin and the triangle is a long triangular stripe which narrows to practically zero 
