562 Mr. G. T. Bethuue-Baker 07i neiv Diatomineura neavei, Austeu. Other striking differences, to which it is here unnecessary to refer^ also exist, and no one who compares the types of these two species can have the slightest doubt that specifically they are absolutely distinct. The designation Pangonia austeni, Beq., must therefore be cancelled. Silvius schoutedeni, Beq. (p. 231), nom. nov. for Silvius fallax, Austen (Bull. Ent. Res. iii. p. 113, August 1912). — The change in nomenclature here proposed by Dr. Bequaert is due to a suggestion long ago tentatively put forward by Loew (^ Dipt. -Fauna Siidafrika's,^ p. 21, 1860), and recently definitely adopted by Surcouf (' jStude Mon. cles Tabanides d'Afrique/ p. 206, 1909), namely that Tabanus fallax, Macq. (Dipt. Exot., Suppl. i. p. 32, 1846), — a species the type of which was stated to be from Caffraria — is a Silvius. If this were so, the designation Silvius fallax, Austen, would of course be a homonym. Tabanus fallax, Macq., however, is not a Silvius, but belongs to an at present undescribed genus allied to Hinea. There is consequently no necessity for a change of name, and Silvius schoutedeni, Beq., is a synonym oi Silvius fallax, Austen. LXIX. — Descriptions of new Species of Lepidoptera from Africa and the East. By G. T. Bethune-Baker, F.L.S., F.Z.S. HypsidsB. Digama hudonga^ sp. n. (^ . Head, palpi, and thorax neutral grey, spotted with blackish ; abdomen yellow, with black dorsal spots ; ventral surface pale straw-colour, witli a lateral row of black spots. Primaries neutral grey, with blackish markings that largely cover the entire surface ; the basal area is almost entirely mottled over with black, leaving but little grey visible ; it miglit be described as having three parallel black stripes confluent with each other ; outside these is a black dot in the cell with all the veins black, a postmedian strongly angled stripe, much blotched, especially on the fold, a subterminal deeply angled and serrate black stripe more or less confluent
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