OCR Text |
Show 1891.] FROM SOUTH-WESTERN AFRICA. 91 upper median portion of hind wing, conspicuously clouded with whitish. Fore wing : silvery-white centres to discocellular and discal spots large and bright; lowest spot in discal series large and curved; a small black spot (as in Z.picrus, Cram.) immediately below subbasal discocellular spot. Hind winy: sub-metallic spots whiter but not so bright as in Z. molomo, the outer discal series more remote from the inner one and more regular; last two spots of both outer discal and hind-marginal series fuscous, outwardly bounded by whitish. The variability and intimate alliance of the various forms of this (the Thyra) section of Zeritis render a satisfactory discrimination of them exceedingly difficult, but I think that the difference of size and the peculiarities of marking above noted warrant the separation of Z. damarensis as a distinct species. It should be observed that the specimens described were taken at the same place and during the same month as Z. molomo. Omaramba-Oamatako (January). Three male examples. Genus ERIKSSONIA, n. g. I M A G O . - H e a d small, clothed with short down ; eyes smooth ; antennae rather short, thick, very gradually incrassate from about middle to. tip (which is obtuse ) ; palpi long, horizontally porrect, not convergent but apart throughout their length, laterally compressed, clothed with short scales above and with long densely-packed hair-like scales beneath, terminal joint long, acuminate, but not very slender. Thorax very short, slender, very sparsely clothed with scales and hairs. Eore wing elongate, produced apically; costa but slightly arched at base, and thence almost straight to apex ; hind margin slightly convex between upper radial and 3rd median nervules ; subcostal neuration like that of Zeritis, except that the 4th nervule is shorter and terminates on costa just before apex ; discocellular nervules almost vertically transverse, slightly curved, the lower about twice as long as the upper one ; upper radial nervule united to subcostal nervure at some distance beyond extremity of cell; discoidal cell short, less than half the length of wing. Hind wings with costa very prominently convex at base, but thence only moderately curved ; hind margin slightly sinuate (in female and in one of the male specimens with a very slight subangular prominence at extremity of 3rd median nervule); at anal angle a short acute projection ; costal nervure terminating at apex; subcostal nervure branching a little before extremity of cell; discoidal cell very short; radial nervule starting from junction of discocellular nervules nearer to 2nd subcostal than to 3rd median nervules. Legs rather long and stout, thickly clothed with scales ; tibiae very sparsely, tarsi closely spinulose beneath ; middle and hind tibia with very short terminal spurs ; fore tibiae in male armed with a long straight terminal spur outwardlv and superiorly ; middle and hind tarsi with the first joint longer than tibia (and in male as thick), and with the terminal claws large and strong ; fore tarsi longer than tibia, in male more slender |