430 PERCY SLADEN TRUST EXPEDITION 



A few species have wings apically acute exactly at the end of R'^ ; the insertion of 

 the pedicel of the sectorial fork in the basal cell quite as far from the cross-vein R to M 

 as the cell's apical width ; and 1st joint in the antenna of the $ shorter than the combined 

 lengths of the 2nd and 3rd joints. T. advena rothschildii and meridionalis, Eaton 

 {cf. Ent. M. Mag., January 1912). Preps. Eaton, nos. 94—96. 



The remaining species have the wing's apex sub-acute or acute between the veins 

 R* and R% or it is divided asymmetrically by R\ the costal portion exceeding the lower. 

 They can be roughly assorted thus : — 



Axil of the sectorial fork nearer than that of the median fork to the base of the 

 wing. T. fratercidus and laheculosus, Eaton. Preps, nos. 84 and 85. 



Axils referred to equidistant from the base of the wing. T. ustulatus, Hal. MS.,' 

 Walker (1859), morulus and ambiguus, Eaton. Preps, nos. 86 — 88. 



Axil of the sectorial fork nearer than that of the median fork to the wing's apex. 

 T. soleatus, Halid., Walk., decvpiens and consors, Eaton. Preps. 91 — 93 and 3 species 

 sub man/) not named, including the one obtained at the island of Aldabra. 



8. Telmatoscopufi fryeri, sp. nov. 



$ {dried). — Wings of a somewhat light sepia-grey, with fringes to match, glossed 

 with impure creamy-whitish at the apex from about the end of R* to that of M\ and 

 with black-hair markings on the disk, viz. : — 4 small spots standing in an almost straight, 

 slightly oblique line with one another at the ends of ranks of bristling hair, and a 5th at 

 the end of the subcosta ; of these the outermost (at the axil of the sectorial fork) stands 

 very little farther from the wing-roots than the three others : and besides these, at the 

 ends of the veins are small blackish spots of appressed spreading hair that do not 

 contribute to the fringe ; wing-margin outlined in black. Legs and nearly all of the left 

 antenna deficient. Ovipositor pitch-brown. Length of wing 2 mm. 



Log. Aldabra, 1908 — 9 (Fryer) : a single defective specimen was brought back by 

 the Seychelles Expedition. 



The seventh genus I'epresented in the collection belongs to a different group, the 

 Group of Trichomyia and Sycorax, which is outlined below. 



Basal cells cuneate at the base ; the anterior bounded in front for nearly half its 

 length by the primary trunk of the radius R\ and then deeply recessed, — a cross-vein 

 linking to the trunk the common stem of the sectors and blending with the stem ; 

 R' suppressed. Wings obovate, rounded apically and widely at the end of R\ Antennae 

 15 -jointed; 3rd joint longer than the scape or than the 4th joint ; joints of the flagellum 

 mostly filiform or pastiniform. Palpi short ; the last joint firm. 



This group contains 3 genera, one of which is represented in the Seychelles collection : 

 they are as follows : 



a. Anal vein long (3 long veins follow the median fork) : 



(i) Eatonisca, Meunier (1905), from Baltic amber; sectorial fork sessile upon the 

 anterior basal cell. 



(ii) Trichomyia, Halid., Curtis (1839), Walker (1856); sectorial fork stalked. 



