6 H. STEMPFFER 



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 seldom been 

 able to examine all the species included in any genus (see Lists of Species) I have 



fult. inf 



vine. 



Fig. 2. Lepidochrysops victoriae Karsch, o* genitalia, abbreviations as in Text-fig. i, an., anellus 



ves., vesica. 



