642 The Zoologist — Marcei, 1867. 



with one very acute and two blunt teeth, black, tipped with reddish 

 brown. I was not able to figure the lower jaws and under lip without 

 spoiling the specimen, so that I have copied both from the 49th plate 

 of Curtis's ' British Entomology,' representing the same insect. The 

 thorax was aeneous, thickly covered with long brown-gray hairs. The 

 abdomen, looked at from above, consisting of eight segments, was 

 purplish black on the dorsum, broadly margined with deep yellow, 

 the ventral surface being entirely of this colour. Wings long, trans- 

 parent, yellowish, clouded with brown ; the posterior margin smoke- 

 coloured ; nervures reddish yellow as far as the stigma, black further 

 on ; stigma also black. The nervures of the posterior wings yellow as 

 far as the middle of the wing. 



The coxae, apophyses, and femora, together with the bases of the 

 tibiae, shining blue-black, tibiae and tarsi deep yellow ; pads and claws 

 brown. There is a minute tooth on the femora of the second pair, 

 but the posterior femora are armed with a very conspicuous and sharp 

 tooth, as shown at a, fig. 13. 



According to De Geer the female of this species differs very little 

 in colour and appearance from the male. In the Museum at Leyden 

 are five examples, two males and three females, the latter being very 

 small in comparison with the former. One male, taken by Mr. Van 

 Bemmelen at Wassenaar, has the middle of the antennae red (half of 

 the third, the fourth and the fifth joints), some brown spots on the red 

 ventral surface, and very dark triangular spots at the extremities of the 

 anterior wings. 



The other male, from Germany, has the antennae resembling those 

 of the example from Wassenaar, the rest of the colouring being of the 

 usual type. The three females are perceptibly smaller, have but a 

 very small tooth on the posterior femora, and have all the coxae, 

 apophyses and femora of a beautiful violet, the tibiae being yellow. 

 In one example the antennae are entirely black; a second example has 

 the antennae red in the middle, while in a third these organs are red 

 from the first joint to the knob. 



A parasite subsequently made its appearance from the small greenish 

 cocoon, which parasite I take to be, although rather doubtingly, 

 Paniscus inquinatus, Gniv. Inside the original cocoon it had 

 constructed another smaller cocoon of a brown colour, resembling 

 gall-stone, the walls of this latter being thin but tough. The wings 

 of the parasite were so twisted together that it was quite unable to fly. 



