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connected with the abnormal Sphingians or Glaucopidians, and 

 particularly with such genera as my Lyeomorplia, a lichen-eat- 

 in-g species, Ctenucha, which Kirby puts with the Lithosians, 

 and Procris, which closely resembles some of the Lithosians in 

 habit and general appearance. Mr. Westwood, you know, calls 

 many of the insects Callimorplia which I refer to Crlaucopis. 



You tell me that Stephens thinks Endryas is near to Acontia ; 

 you have stated your belief that it comes near to Eupkasia, or 

 to some allied genus, while Mr. Westwood, who has been dis- 

 secting it, sees an affinity with Deiopeia and Hypercompa, and 

 you ask, " What's to be done when doctors disagree ?" I 

 have very carefully compared Eudryas grata with all the foreign 

 and native moths in- my collection, and have arrived at the con- 

 clusion that unless Boisduval is right in putting it near to Aga- 

 rista and dEgocera, it must go among the Notodontians. I be- 

 lieve that Westwood is not so far out of the way in seeing an 

 affinity in it with some of the Lithosians and Arctians. It is 

 just that kind of affinity it ought to have if it belong to the 

 great group of Bombyces rather than to the Noctuce. The re- 

 markable, dark, dilated or spatulate scales on the thorax of 

 Eudryas, precisely resemble those in similar situations on Bom- 

 byx vetteda, but I have not seen anything exactly like them in 

 the Noctuce. In its winged state it seems to exhibit a close 

 affinity to Clostera, Pygcera, Cerura, and even to Notodonta 

 ziczac, dictcea, etc. In the form of the wings, their position in 

 repose, and in its woolly fore legs stretched out before the body 

 when at rest, it strongly reminds us of some Cerurce. Its collar 

 (patagium) is narrower and not elevated, in which it differs from 

 most Noctuce and agrees with the slender-bodied Arctice. Its ab- 



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domen nearly cylindrical, not tapering or depressed behind (dur- 

 ing life), and with three rows of black dots, is, in these respects, 

 exactly like that of EucJicetes egle. Cerura? verbasci of Europe 

 and Pygcera bucepliala have the rows of spots on the sides, which 

 are not found in any Noctua, to my knowledge. I do not know 

 whether any of your European Notodonta' have simple, setaceous 



