THALIDRA RHIPHEUS. 
199 
upwards into a loop like the caterpillars of Geometra 
and Catocala. Before undergoing its metamorpho- 
ses, it attaches itself by the tail and a band round 
the middle, like the caterpillars of Papilio, Colias, 
Pieris, &c., or rather like those of Geometra pen- 
dularia and Gyraria. 
“ The chrysalis is elongated and pointed, scarcely 
angular, of a green colour with a transverse gilded 
band ; the extremity, which is of a deeper green, is 
sprinkled with a great number of golden points. 
“ The perfect insect comes out in about three 
weeks. Exposed to the sun, it developes itself 
completely in two or three hours, while individuals 
bom in the shade take nearly a day to develbpe 
themselves, and are usually less brilliant.” 
