. Bulletin of the British Museum (Natural History) Entom Supp. 6 preferred to give drawings of the organs separately. Although the making of such mounts entails longer and more delicate operations, it is worth while because it gives a better idea of each organ and shows up the specific characters. Where there were imperfections in my preparation, I have reproduced them in my drawings so that my figures are faithful copies and not improvements on the original. To avoid confusion I have not drawn any hairs, but I have shown their points of insertion. The terminology of the genital pa
. Bulletin of the British Museum (Natural History) Entom Supp. 6 preferred to give drawings of the organs separately. Although the making of such mounts entails longer and more delicate operations, it is worth while because it gives a better idea of each organ and shows up the specific characters. Where there were imperfections in my preparation, I have reproduced them in my drawings so that my figures are faithful copies and not improvements on the original. To avoid confusion I have not drawn any hairs, but I have shown their points of insertion. The terminology of the genital parts employed in the present work differs slightly from that which I used in some of my previous publications. In these, I followed Bethune Baker, and employed the term " tegumen " for the whole of the dorsal parts. I think now that it is more reasonable to call the part that corresponds to the tenth tergite " the uncus ", and to confine the term " tegumen " to the deriva- tive of the ninth tergite, even though the uncus, often closely fused to the tegumen, appears merely as a thickening on its posterior margin, or only consists of the two small lateral lobes, which Bethune Baker called " cheeks ". For the part support- ing the penis which is usually fused to the base of the valves, I employ the term " lower fultura ", a more general term than " furca ", which is a special form of the lower fultura found in the Plebeiinae. The terminology of the parts, as used in the present work, is indicated in figures of Anthene definita Butler (Text-fig. i) and Lepidochrysops victoriae Karsch (Text- fig. 2). In most cases the description of the genitalia is followed by the comparison of the genitalia of the type-species with those of other species in the genus, in an attempt to establish whether the nominal genus under review is a natural taxonomic unit, or merely an artificial heterogeneous collection of species. But as I have seld
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