THANAOS TAGES. 127 



deposited on the leaflets of the plant a few pale greenish 

 pellucid eggs, of a somewhat elliptical figure standing 

 on end. 



About the middle of June I noticed the egg-shells 

 were empty, but I could not see the young larvse either 

 then, or for some time subsequently, until June 28th, 

 when at last I detected them, three in number, they 

 had been all the while feeding in little caves, formed by 

 drawing together three leaflets with silken threads, 

 and it was the glistening of these threads in the sun 

 that first caught my eye. Each cave was formed by 

 the two outer leaflets being drawn almost close together 

 (leaving space enough for the ejection of "frass"), 

 and the middle one being bent over them like a curved 

 roof; all this was managed quite naturally, so that the 

 cave passed easily for a leaf not quite expanded. 



Some of these caves had already served their turn 

 and been abandoned for newer ones, and it appeared 

 that the larvse had been feeding on the inner surface 

 of the leaflets ; in the others I was able by the help of 

 a lens to detect through the interstices somewhat of 

 the fat form of their tenants. 



On the 30th of June I turned one out for figuring ; 

 it was then nearly three-eighths of an inch long, with 

 a prominent dark purplish-brown head, covered with 

 minute pale greenish points ; the body rounded above, 

 a little flattened underneath, plump, and tapering a 

 little at each end ; the second segment much smaller 

 than the third, especially in the part just behind the 

 head; the colour of the body a pale rather bluish- 

 green, somewhat paler still on the sides and belly, a 

 distinct dorsal line of darker green, a subdorsal line 

 faintly paler than the ground colour ; the whole sur- 

 face of the back and sides irrorated or shagreened with 

 exceedingly minute greenish- white points. 



These most interesting little fellows continued to 

 feed and grow, and as they began now to eat away the 

 whole thickness of the leaflets forming their caves, 

 their ravages exposed their bodies to light, and as soon 



