212 Mr. A. G. Butler on the Genus Terias. cated on each side, and the thorax is moderately narrowed behind, and not sinuated before the angles. Platysma retinens. This belongs to Eccoptogenius (Chaudoir), a genus closely allied to Remhus and having no near affinity with Trigono-toma, near which Chaudoir placed it. Walker's species is closely allied to, if not identical with, E. moestus, Chaud. Driinostoma marginale. A Harpalid, with upper surface finely punctured and frontal furrows as in Bradgcellus and allies. _ The type being female, its generic position cannot be ascertained. There remain four species of Walker of which I have no notes, viz. Clivina rectUj Agonum placiduhim, Stenolophus injixus, and Tach/s rufala. The synonymy of Tricondyla femorata is given in the Munich Catalogue. Of Tricondyla tumidida and sdtiscabra^ Mr. CO. Waterhouse informs me, the types cannot be found. XIX. — Notes on the Genus Terias, with Descriptions of new Species in the Collection of the British Museum. By Aethur G. Butler, F.L.S., F.Z.S., &c. [Plate v.] I HAVE recently been rearranging the Museum series of the Lepidopterous genus Terias, of which genus we possess most of the named forms ; as I suspected, our species fully bear out my expressed opinion that any attempt to associate the allied forms without most careful attention to breeding, and that through several generations (in order to avoid all possi-bility of mistake) , will result in the union of the entire series (the sections Xanthidia and Eurema being perhaps excepted) as one variable species, a consummation devoutly to be depre-cated. Of the various modifications of typical Terias we have in the Museum series upwards of 150, some of which must certainly be varieties, whereas others doubtless have a full right to be regarded as genuine, because unvarying and locally fixed, species ; but it is quite impossible for any one,
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