of the genus Huchroma. 295 
patches is obscure. The usual colour of the wing- 
cases is obscure brassy or coppery, the outer margin 
being more metallic than the other parts; some indi- 
viduals become of a brilliant copper colour. The ventral 
sculpture and pubescence is always largely developed, 
and exhibits but little variation. The notch on the fifth 
ventral segment of the female is always deep and very 
conspicuous, but it varies considerably in size, and more 
particularly in width; the angles at its hind margin are 
always acute, and tend to meet one another, but in some 
individuals are considerably more approximate than in 
others. The apex of the eighth dorsal plate in this sex 
is in this species always emarginate, but in some cases 
the emargination is very slight, while in others it is, 
though small, very distinct. So far as the material 
before me will enable me to judge, these variations are 
not geographical. 
