AMERICAN LEPIDOPTERA. 195 



Length of primary whig^ (from base to apical ani^le), 73 mil. 

 Length of ho(h/, 44 mil. Width of ])rimari/, (from apex to internal 

 angle), 50 mil. Jjength of primary^ (from base to internal angle), 44 

 mil. 



This fine addition to our United States fauna differs from an allied 

 tropical species determined as " egeus, Cramer sp." in the Berlin Mu- 

 seum, in the shape of the primaries which in that species are produced 

 at apices, the external margin receding suddenly below them. It is 

 also a rather larger, broader winged and slighter bodied species. The 

 narrow whitish transverse line of the primaries is inwardli/ rounded 

 superioritj to costa. Hyp. zelleri is also distinguished by the outer 

 rounded band of the secondaries above being even along its external 

 edge, whereas in '■'■egeus' it is prominently scalloped; this latter cha- 

 racter will also separate it from a more Southern form recently figured 

 by Dr. Felder, who showed us his drawing while we were in Vienna. 



Dedicated to Prof. P C. Zeller of Meseritz, the widely known and 

 respected Entomologist, whose writings on our subject need no men- 

 tion of our earnest appreciation to enhance the value of his scientific 

 labors. This dedication commemorates pleasant days we recently en- 

 joyed with the Professor at his home, during which our science was 

 discussed with one of its fathers whose personal kindness and conside- 

 ration to us merits our thankful recognition. 



. Family NOCTUIDAE. 



MICROCOELIA, Guenee. 



Microcoelia diphteroides, Guenee. (Plate 3, fig. 69 9 •) 



Micrococlia diphteroides, Guen., Noct. 1, p. 34, PI. 3, fig. 7, (1852). 



Micr. dipht, Walk., C. B. M., Lep. Het., Noct. Pt. ix, p. 31, (1856). 



Micr. dipht., Grote, Proc. Ent. Soc. Phil., p. 78, Plate 2, fig. 2, (June, 1864.) 



Hahitat. — Atlantic District ! Imago flies in June and July. 



We have seen M. Guenee's type of this species in the British Mu- 

 seum Collection. The specimen is old, badly worn. M. diphteroides 

 has been described by Mr. Grote as above cite.d. The following is a 

 well defined form of this species : 



Hicroc. diphteroides, a obliterata Grote. (Plate 3, fig. 70 9 )• 

 Microc. obliterata, Grote, Proc. Ent. Soc. Phil., p. 79, (1864). 



This race differs from the type by the entire obsolescence of the 



black transverse lines of the upper surface of the primaries. The 



costal marks are present, as also the black patch on the disc between 



