3ÇO GERTRUDE RICARDO. DIPTEREN II. 



as thorax. Abdomen narrow, yellowish, darker on the last three or four segments, with a tawny 

 tomentose médian stripe extending in unrubbed spécimens from the second to the sixth 

 segment, usually formed by subtriangular connected spots, the pubescence on this stripe is 

 yellow at the segmentations, otherwise black as on the rest of the dorsum, sides of abdomen 

 with black hairs; underside paler, only the extrême apex black, the segmentations whitish 

 yellow with yellow hairs, pubescence otherwise black, very short. Legs yellowish, the coxae 

 blackish with grey tomentum and white hairs, the fore femora in some spécimens reddish 

 brown, the fore tibiae at apex and last joints of tarsi blackish, pubescence of legs chiefly 

 black. Wlngs greyish, yellow on the fore border, stigma yellowish brown, veins brown. 



3. Tabanus designatus n. sp. 



Types, maie and female, from Etna Bay, and another maie from same locality, and two 

 females from Merauke (Dr. J. W. R. Koch). 



A small reddish brown species with three well marked greyish stripes on the abdomen. 

 Forehead broad with a large square callus. Nearly allied to Tabanus jucnndus Wlk. from 

 India. Length 9 — 10 m. m. 



9- Face covered with greyish white tomentum and with some long white hairs. Palpi 

 small, stout, pale yellow with black pubescence. Beard white. Antennae testaceous, darker at 

 the apex, the first two joints appearing darker by reason of the grey tomentum covering them, 

 and their black pubescence, the third joint with an obtuse tooth, broad at base. Subcallus and 

 upper part of cheeks with yellowish brown tomentum. Forehead covered with grey tomentum, 

 pale reddish at vertex, broad, nearly four times as long as it is wide anteriorly, where it 

 narrows slightly. Frontal callus black, large, square, protubérant, reaching the eyes anteriorly, 

 divided by a fine short line from its small club shaped extension. Thorax black with three 

 narrow grey tomentose stripes, sides and posterior part also grey; sides and breast pale 

 reddish, covered with grey tomentum, with black hairs above and white ones below. Scntellum 

 pale reddish, covered with grey tomentum. Abdomen reddish brown, the three stripes com- 

 mencing from the first segment and reaching the sixth, in some spécimens the latéral stripes 

 end or become indistinct beyond the fourth segment; segmentations very narrowly pale, 

 pubescence very scanty, chiefly black, some longer white hairs on the sides of abdomen ; 

 underside reddish brown with paler segmentations. Legs yellow, the coxae and base of femora 

 darker with grey tomentum, apical joints of tarsi brown. Wings clear, veins and stigma 

 yellow, short appendix présent, çf Identical. Eyes with the larger facets occupying the upper 

 two third of their surface, the small ones not reaching the vertex. Palpi pale yellow with 

 chiefly white pubescence. Legs somewhat darker. 



4. Tabanus exagens Walker. 



Journ. Proc. Linn. Soc. VII, p. 205 (1864). 



Type (a female) and another from Misol, the type is not a maie as stated by Walker. A long 

 séries in Dr. Lorentz's Coll. from the following localities in Dutch New Guinea: Regen Island, 

 Bivak Island, Alkmaar, Heuvel Bivak. 



A well marked black species with three prominent grey triangular médian spots on 

 the abdomen. Antennae and leçs blackish. Length 26 m. m. 



