135 



Abb., it seems to me to belong to the same group as Demas, 

 at any rate to the Artisice. Scribonia certainly belongs to 

 them, and in its own group symbolizes Zeuzera. Dryocampa 

 must belong not to the Bombycidce, but to the Nbtodontidce. 



You will see on the other side a larva, larva case, pupa and 

 imago, of an insect allied to, but distinct from, Thyridopteryx 

 Steph. The imago is chocolate brown, disk and nervures 

 darker, a trilobate white spot on the upper wing. Feeds on a 

 shrub, I think the Mespilus cestivalis Walt. ; vide Elliott I, 549. 

 It is figured by Abbot. 



I must say one or two things more. The larva of Lopho- 

 campa proves to me that it is allied to Acontia, Erebus, etc., 

 and comes late in the Noctuce. It is a half looper with twelve 

 feet. Abbot has figured, or rather drawn, a species I do not 

 know, small and differently colored. Larva purplish, with 

 orange and yellow spots, feeding on Hibiscus Mosclieutos. 



There is one more insect I will mention, and then I have 

 done. It is a Colias, very near to, but smaller than our Edusa. 

 Upper wings deep orange, with a broad black border, in which 

 is one small, round, pale yellow spot near the lower angle. The 

 central black dot as usual. Under wing grayish, clouded ex- 

 ternally, with an incomplete blackish margin, and a bright central 

 orange spot. Below, upper wings yellowish, disk orange, one 

 central and four marginal black dots ; lower wings greenish, 

 with a central white spot surrounded by a pale ring. 



HARRIS TO DOUBLEDAY. 



CAMBRIDGE, Sept. 15, 1839. 



The male Oiketicus has the form, etc., of a Zeuzera ; the 

 larva, in form, is not remote from those of the Zeuzeriadce ; and 

 it has the habits of the true spinners, or Bombyciadce. From 

 the latter we pass by means of Megasoma Boisd., to the Atta- 



