. Bulletin of the British Museum (Natural History) Entomology. THEREVINE STILETTO-FLIES OF THE ETHIOPIAN REGION 279 (F. Reiser) (NMB); Tarn., Maroantsetra, 2 <J, (F. Reiser) (NMB); Fia., Mananjary, 14 $, 10 $, (F. Reiser) (NMB); Tul., Fort-Dauphin, 1 (J, 1 $, 15 & (F. Reiser) (NMB); same locality, 1 <£, x. 1901 (Ch. Allnaud) (MP); same locality, 3 $, (K. M. Guichard) (BMNH). Irwiniella flavicornis sp. n. (Text-figs 198, 272-276) Diagnosis. q\ Similar to velutina, but antennae and palpi yellowish. Humeri, postalar calli and scutellum dis
. Bulletin of the British Museum (Natural History) Entomology. THEREVINE STILETTO-FLIES OF THE ETHIOPIAN REGION 279 (F. Reiser) (NMB); Tarn., Maroantsetra, 2 <J, (F. Reiser) (NMB); Fia., Mananjary, 14 $, 10 $, (F. Reiser) (NMB); Tul., Fort-Dauphin, 1 (J, 1 $, 15 & (F. Reiser) (NMB); same locality, 1 <£, x. 1901 (Ch. Allnaud) (MP); same locality, 3 $, (K. M. Guichard) (BMNH). Irwiniella flavicornis sp. n. (Text-figs 198, 272-276) Diagnosis. q\ Similar to velutina, but antennae and palpi yellowish. Humeri, postalar calli and scutellum distinctly yellowish brown translucent, not thickly covered with whitish grey tomentum as in velutina. Femora yellowish brown in ground-colour and only thinly tomentose. Yellowish brown ground-colour of the abdomen also distinctly visible. §. Unknown. Description. $. Head (Text-fig. 198). Facial index 0-50. Agreeing in most details with the head of velutina, but antennae and palpi yellowish. Both with very thin whitish tomentum, and antennal style black. Upper part of frons with a dull blackish area of smaller dimensions. Proboscis apparently more slender and also paler than in velutina. The tomentum more yellowish tinged on frons and face, and generally less dense than in velutina. Third antennal segment (Text-fig. 198) shorter than in velutina. Thorax. Tomentum of mesonotum darker than in velutina, and very thin on lateral parts from humeri over notopleura to postalar calli and on to scutellum; all these areas thus appearing distinctly yellowish brown translucent. A brownish tomentose stripe along mid-line, much wider than in velutina and more diffusely demarcated. Pleura also less intensely tomentose. Dc setae absent. Wings as in velutina. Legs. Chaetotaxy as in velutina. Coxae and femora yellowish brown to brown in ground- colour and only slightly tomentose, thus with almost the same colour as the tibiae. F1 darkened on anterior surface. Tibiae distinctly paler than in
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