280 CATERPILLARS AND THEIR MOTHS 



Instead of clasping the twig with the anal props, 

 regalis larvae, when nearly grown, fasten one prop on 

 the other, the twig being held between them, but not 

 by them, as a ring is around a finger. 



They w^ere very peaceful and quiet crawlers, never 

 interfering with each other and never injuring each 

 other. 



The pupge measured an inch and three quarters in 

 length and the same in girth around the thorax. They 

 were stout, smooth, almost black, with a double black 

 horny plate on the back at the base of the thorax, and 

 a smaller one on the eighth abdominal segment. The 

 back of the thorax was transversely ridged. The pupse 

 gave out a strong and unpleasant odor, like laudanum 

 with a tang of valerian. 



Butternut makes larger regalis caterpillars than ash, 

 and those fed on it were the first to molt and pupate. 

 The differences of color, however, were not due to 

 either food-plant, as all varieties were found in each 

 set of tins. 



Mr. Beutenmiiller gives no mention of the brown 

 larvae in his " Bombycine Moths Found within Fifty 

 Miles of New York," yet they have been far the more 

 common with us, and we have seldom had a clear 

 green larva such as he describes, though we have 

 reared several broods, not from the same parents. He 

 does mention a black form, which we have never seen. 



The moths are of a queer orange-brown color, with 

 stripes of lead-color between the veins of the wings, 

 and large bright yellow spots on the fore wings. The 

 hind wings have a yellow patch near the fore margin, 

 and often only three or four lead-colored stripes, some- 



