Packard] LNTSECTS OF THE GAEDEN. 59 



observed in this country only late in the summer and in Sep- 

 tember, when the cabbages have headed, yet these worms, as 

 Dr. Fitch suggests, probably belong to a second brood. Mr. 

 H. T. Stainton, in his excellent "Manual of British But- 

 terflies and Moths," states that the moths fly in May and 

 August, while the caterpillars appear in June, July, and a 

 second brood again in September. Dr. Fitch suspects that 

 the first brood of • caterpillars maj^ feed on the5'oung cabbage 

 plants in early summer, and thus do more mischief than in 

 the autumn, when the heads are fully formed. 



The caterpillar is a little pale green worm, with small, 

 stiff", dark hairs scattered over the body ; it is a quarter of an 

 inch long. When about to transform it spins a beautiful 

 open net-work of white silken threads, forming a cocoon 

 (Fig. 46*) open one at end; it 

 is a third of an inch long. 



The moth itself (Fig. 4G a) is 

 pale gray, with the head, palpi 

 and antenna? white, but the lat- 

 ter are ringed alternately with 



1 •, 1 „ .1 , Cabbage "Web-moth and cocoon. 



white and gray on the outer ^ 



half. The rest of the body is gray, except on the under 



side, and on the middle of the thorax, where there is a broad, 



white, longitudinal band, which when the wings are folded is 



continuous with the white band along the inner side of the 



wings. The two front pair of legs are gray, with the tarsal 



joints ringed narrowly with white ; the hind legs are whitish 



and hairy. The fore wings are gray, with a conspicuous, 



broad, longitudinal, white band along the inner edge, and 



extending to the outer third of the wing ; this band sends out 



three teeth towards the middle of the wing, the third tooth 



being at the end of the band. There is a row of dark dots 



*Tlii8 and flsnre 41 arc from my '"Report on the Injurious Insects of 

 Massachuf^ctts'." anil are kindly loaned by Mr. C. L. Flint, Secretary of the 

 Massachusetts Board of Agriculture. 



27 



