154 LLOYDS NATURx\L HLSTORY 



This species is a native of the Eastern United States, but is 

 considered local, and is seldom met with in abundance. 



" Its body and wings are rather long. It is of an ashen-grey 

 colour ; the fore-wings are variegated with dusky clouds and 

 bands, and have a small triangular spot and a round dot of a 

 silvery-white colour near their base ; the hind-wings are tinged 

 with ochre-yellow towards the tip. It expands two inches and 

 three-quarters." {Harris.) 



The larva is white, with three black spots on each side of 

 the second segment, arranged in a triangle ; the head and legs 

 are yellowish, the former black below, and there is a row of 

 yellow piliferous spots on the back. The pupa is slender, with 

 two spines on the clypeus, another on the lower part of the 

 head, and two conical processes on the pro-thorax, bifid above ; 

 abdominal serrations very fine. 



The larva bores in the roots and stems of the spotted or hairy 

 alder {Alnus incand). 



A larger species {S. quadrigiittatiis^ Grote), confounded with 

 this by Harris, is found in Canada. I have therefore thought 

 it best to quote Harris's earliest and most typical description. 



GENUS CENETUS. 



GLiidiis^ Herrich-Schafier, Aussereurop. Schmett.,i., p. 5 (1855). 



C/iaragia, Walker, List Lepid. Ins. Brit. Mus., vii., p. 1569 



(1856); Scott, Trans. Ent. Sec. N. S.Wales, ii., p. 25 



(1873)- 

 Philopsyche^ Scott, Austral. Lepid., ii. pi. 11 (1890). 

 Hepialus, Meyrick, Proc. Linn. Soc. N. S. Wales (2), iv. 



p. 1127 (1890). 

 The largest and handsomest species of Hepialidcc are found 

 in Australia and New Zealand. Many of these measure six or 

 seven inches in exininse, and are usually brown or reddish^ with 



