Fauna Sumatrensis. (Bijdrage Nr. 69). Mycetophilidae (Diptera), by F. W. Edwards, (British Museum, Natural History). The following report is based almost entirely on collect-ions received for determination from Mr. E. Jacobson in 1926 — 8. These collections form a notable addition to our knowledge of the Sumatran Mycetophilid fauna, as they include representatives of over forty species. Only twelve species (including nine Sciarinae) had hithertho been reported from Sumatra; nine of these were not represented in the present collections, but are noted below to complete the list. Nearly all the specimens here recorded were taken by Mr. Jacobson at Fort de Koek (920 m.). CEROPLATINAE (incl. MACROCERINAE). 1. Macrocera egregia de Meij. (1924) (= bifasciata Edw., 1928). Gunung Talamau. Also known from Malay Peninsula and Siam. 2. Platyura (Xenoplatyura) lunifrons Senior-White. Fort de Koek, I $. Also known from Ceylon, and doubtfully from the Philippine Is. 3. Ceraplatus (Euceroplatus) innotatus sp. n. cf. Head blackish, lighter behind. Antennae entirely black-ish, structure as in the following species. Palpi orange. Thorax brown dorsally, somewhat darker towards margins. Pronotal lobes pale yellowish, propleurae blackish. Pleuro-
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