FIELD NATURALISTS' CLUB. 171 



than 1 to 2 feet and the supply of leaves is only sufficient to 

 support one or two larvae, more often than not only one is found 

 on each plant under a leaf. 



In the open, exposed to the sun, like the vines in the 

 Queen's Park, so much frequented by metallic tinted wasps, the 

 leaves lose their beauty completely, but whereas the plants that 

 grow in the open are luxuriant in foliage, the others that grow 

 in the shade are deficient in this respect. 



I have found several larvae of T. flavescens on some creepers 

 and they are very easy to rear in captivity. 



In the larval stage T, flavescens and S. eurymedia are 

 almost identical. 



The larvse of the former are black and white with about 

 eleven latitudinal bands or belts, marked with black and white, 

 regularly, like a chequer-work pattern, on close examination, 

 appearing like so many links of a chain, as in S. eurymedia, 

 except that the latter are reddish about the feet and under 

 the body, and when mature are just about half the size of 

 T. flavescens — remarkable, thin, tapering horns rise from the 

 second segment, and are slightly curved at the tips and are 

 vibrated rapidly when disturbed — the movement is not so rapid 

 as that in the larvae of Lycorea sp. mentioned later on. 



The pupae of both are again similar, the splendid burnished 

 golden appearance, except where the thorax, eyes, wings, and 

 a few specks, marked in black indicating the venation and other 

 parts mentioned, most distinctly and clearly. In some of the 

 pupae the dorsal depression on the ridge between the head and 

 abdomen is more developed than others but it is always con- 

 spicuous, which seems to cause the protuberance of the thorax 

 as in Callidryas. The resemblance to Mechanitis sp. in this 

 stage is marked and I refer to it later on. The imago of 

 T. flavescens described by Kirby, (see F. N. C. Journal) No. 3, 

 August 1892) and *S'. eurymedia are very different, but in the 

 early stages these insects are very much alike. The delicate, 

 frail, Sais eurymedia with its soft, transparent, pale greenish 

 yellow wings, margined with black, the fore and hind wings 

 rounded at the tips, flies low and slowly along, while T. flavescens 

 is tawny yellow and black, strong, and jerky in its flight, has 

 pointed forewings and is very different in this stage. 



There are two types of larvae of this insect which, however, 

 produce very little variety in the imago, — that is, some few of 

 them are much darker than the usual type met with. They are 

 almost black, the white marks showing very faintly, the pupa 

 is more marked with black in the venation of the thorax, etc., 

 but this species is liable to such changes, and not constant in its 

 markings, though according to Kirby more so than some other 

 members of the group. 



