SATURNIID^. 85 



reddish-brown eye in the middle, that on the fore-wings having 

 a round brown spot above it ; but all the large spots have 

 disappeared, except those along the costa and hind margin. 

 The female is much larger and lighter-coloured than the male. 



The larva feeds on the plane-tree (Plafanus occidentalism 

 Linn.), oak, pine, (S:c. It varies much in colour, being tawny, 

 orange and tawny, and occasionally green. It has two short 

 rugose horns on the second and third segments, and some 

 small sharp points on the others, crowned with dense tufts of 

 long rigid bristles. There is a small yellow spot, surrounded 

 by a black ring, on the sides of each of the abdominal segments. 



This species is double-brooded. "The caterpillar," says 

 Abbot, "went into the ground September 16, and came out 

 July 4th. The caterpillars are not common, and are the most 

 difficult to bring to perfection in confinement, as they will not 

 eat in that situation ; and even if they change into a chrysalis, 

 they die afterwards." 



The pupa is rather long and narrow, with a long tail, bifid at 

 the end, and the edges of the segments armed with a regular 

 series of spines. 



The moth is not uncommon in many parts of the United 

 States. 



FAMILY XXXIL SATURNIID^. 



Egg.— Large, smooth, slightly depressed, white, or green. 



Larva. -Sixteen-legged; and bearing warts with whorls of 

 hairs, or furnished with long fleshy spines ; often secreting a 

 white waxy powder when half-grown ; usually feeding on trees. 



Pupa.— Generally enclosed in a strong silken cocoon, some- 

 times egg-shaped and closed, sometimes flask-shaped and open 

 at one end ; frequently enclosed in a leaf, and attached to the 

 branch by a strong strand of silk ; rarely naked and subterranean. 



