TELEA POLYPHEMUS 263 



shell was dropped. This happened only with shells 

 not held in place by the maternal glue. 



The caterpillars' heads were round, large, and red- 

 brown. Their bodies were reddish over the thoracic 

 segments, yellow elsewhere, with a lateral line of dark 

 dots, two on each segment, and six small tubercles 

 with dark setae on each segment. They measured 

 one fourth of an inch in length. 



On the eighth day they molted. Their heads and 

 legs were red-brown. Their bodies were blue-green 

 above, yellow-green below the lateral line, with yellow 

 tubercles. The props were green, and the anal plate 

 was edged with white. 



On the thirteenth day they molted again, coming 

 out rather yellower than before, and looking as if the 

 lines between the segments had been cut in deep. 

 The tips of the tubercles and the edge of the anal 

 plate were pearly white. 



On the nineteenth day they molted for the third 

 time, coming out as before, but over an inch long, and 

 with the anal shield edged with brown and conspic- 

 uous. When disturbed they made a low grating 

 sound, which seemed to be made by rubbing the man- 

 dibles together. 



On the twenty-eighth day they molted for the fourth 

 time, and were not changed in looks. They now ate 

 voraciously and grew to a length of fully three inches, 

 one or two being even longer. 



We have reared many broods and captured larvte, 

 and made many experiments with their food, and 

 there seem to be few of our native trees whose leaves 

 they refuse. We have found them on mcii)le, oak. 



