NORTH-AMERICAN NOCTUID^. 57 



Body flattened ; abdomen untufted ; head and thorax 

 dusky green, the tegulge lined outside with black, 

 and a black tuft-point at the middle of the thoracic 

 disk. It was first sent me from Missouri by Pro- 

 fessor C. V. Kiley; since then it has been taken 

 almost everywhere through the Middle and Eastern 

 States and in Ontario ; but nowhere is it common. 

 The Moth hibernates, as in other species in this 

 group. 



It is incorrect, in my opinion, to call this genus 

 Xylina. This latter name, spelled with an " e," 

 is first used by Hiibner for Lithoxylea. The term 

 Lithophane is used for Fetrijicata and four other 

 Noctuae by Hiibner in the ' Verzeichniss.' In 1874 

 I took Socia {Petrificata) as the type, and referred 

 Gra])tolitlia as synonymous or to be used as a 

 subgenus. 



Lithojpliane Querquera, Grote, Sixth Ann. Rep. Peab. Ac. Sc. p. 34. 



22. Lithophane Viridipallens. 

 This apparently very rare species is of a pale, 

 somewhat bluish, grey-green. It is allied to Quer- 

 quera, but differs by the colour, the narrower reni- 

 form, and the absence of the black accentuations 

 to the subterminal line. Hind wing fuscous, with 

 whitish fringes, not ruddy as in its ally ; beneath 

 with a faint flush. This is a very delicately coloured 

 and ornamented species ; it agrees with Querquera in 

 having a neat black dot on the middle of the thorax. 

 Several specimens have been taken by my friend 

 Mr. Roland Thaxter, at Cambridge, Massachusetts. 



LithopJianeViricUpallens, Grote, Bull. U. S. Geol. Surv. iv. p. 180. 



