50 ON LEPIDOPTERA FROM UGANDA. [Jan. 14, 



BeLBNOIS FORMOSA Butl. 



The intermediate phase of this species from Toro differs from 

 the wet phase in the smaller and partly obliterated white spots in 

 the apical border of the primaries ; and on the under surface 

 in the pale earthy-brown subapical streak and veins on the primaries 

 and the brown veins and markings on the secondaries. The dry 

 phase (which we obtained from the Crowley collection) is still less 

 spotted on the apical area of the primaries above, has the apical 

 area of these wings below and the secondaries of a whity-brownish 

 tint with still paler brown markings than the intermediate 

 phase. 



S , Toro {Sir ff. Johnston) ; d d , Mt. Elgon {F. J. Jackson). 



Among the Lepidoptera Heterocera there was nothing of 

 interest with the exception of a very remarkable new genus 

 of Sesiidce, which Sir George Hampson has asked me to describe. 



Oryptomima, gen. nov. 



Allied to Ceratocorema. Wings for the greater part opaque, 

 brilliantly metallic : primaries narrow, elongated, the costa nearly 

 straight to |, then gradually deflexed to apex, which is moderately 

 acute; outer margin very oblique, slightly convex, passing 

 gi-adually into inner margin, which is slightly concave almost to 

 the base : secondaries with the costal margin nearly straight 

 to apex, the apex moderately defined, the outer margin slightly 

 arched to first median branch and thence nearly straight to anal 

 angle ; abdominal margin sinuous, widest in the centre. The 

 neuration may be characterized by veins 7 & 8 of the primaries 

 being emitted from a long footstalk ; vein 4 of the secondaries 

 absent. Body smooth and shining ; the antennae simple ; palpi 

 rather slender, elongated, second joint upturned, slightly curved, 

 third joint porrected at an oblique angle, spine-like. Front legs 

 with tibife coarsely fringed below ; second pair fringed externally, 

 the upper end of the joints with the fringe projecting, two well- 

 developed unequal spurs ; third pair smooth, with two long unequal 

 spurs beyond the middle and two below the end of the tibife, the 

 latter joints and the tarsi coarsely setose : abdomen with a long 

 densely scaled process with naked extremity from the dorsal surface 

 of the terminal joint, resembling the ovipositor in certain Ichneu- 

 monidce ; vulva tufted. 



Oryptomima hampsoni, sp. n. (Plate I. fig. 8.) 

 Wings above steel-blue glossed with green, brilliantly metallic : 

 primaries with a small bifid subbasal patch divided by the median 

 vein ; end of cell and median vein blackish blue ; beyond the cell 

 a hyaline belt brilliantly shot with golden-green from near costa 

 to near external angle, slightly increasing in width from front to 

 back of wing : secondaries with the basal two-sevenths hyaline 

 crossed by steel-glossed black veins. Body above steel-black, 



