250 tMe entomologist. 



fading into black, giving an appearance similar to polished 

 tortoiseshell. Wings yellow at their insertion ; radius pale 

 as far as the stigma; the latter, together with nervures, dark 

 gray ; membrane of the wing iridescent. Abdomen brown- 

 yellow, having on the dorsum six black transverse lines 

 (basis of the segments), diminishing in thickness towards 

 the anus. All the coxae black at the base, or with a black 

 line towards the outer side; femora red-yellow; tibiae 

 yellow, the posterior pair being one-half blackish. Anterior 

 tarsi having the ends of the joints brownish ; posterior tarsi 

 rather dark. 



The only male I possessed was black on the upper side, 

 the ventral surface and the legs being yellow. The antennas 

 were pretty robust, somewhat hairy, and entirely black. The 

 head was black, with the exception of the trophi ; and in 

 these again the extreme points of the mandibles were black. 

 The thorax was black, with the exception of the pronotum 

 (yellow) ; scutellura black. The insertion of the wings was 

 yellow; the principal nervures and the stigma deep brown. 

 The dorsum of the abdomen was black, the margins of a 

 brownish orange tint; the under side was also of this colour, 

 but on the upper side the margins of the segments were 

 yellowish. Legs yellow ; the four anterior tarsi pale brown 

 at the tips ; the posterior coxae had a black smear at the 

 base; the posterior tibiae for one-half and the posterior tarsi 

 sordid brown. 



It will be seen on comparison that there is a very great 

 difference in the images between the present species and 

 Klug's Ventricosus. It may be said that in general this new 

 species is much more darkly marked. 



As my insects died without having paired with the only 

 male which I had succeeded in rearing, I requested Mr. 

 Ritsema, who had got me the last examples from Haarlem, 

 to see if he could send me some eggs. With a readiness for 

 which I cannot sufBciently thank him he brought me a 

 female from the same bushes, which female while in confine- 

 ment had laid eggs on leaves of twigs placed in water. 

 There was not the least doubt that the insect belonged to the 

 same species. 



To my astonishment I observed that the eggs were not 

 placed, as I supposed they would have been, in the nervures 



