230 



BUFF ARCHES. 



Thyatira Derasa. 

 PLATE XXIII. Fig. 3. 



Phal. Noctua Derasa, Linn. , Don. vii. PI. 223, fig. 1 Noctua 



derasina, Haworth. Buff Arches, WUkes^ Hani* Thya- 

 tira Deraea, Ochsen, Steph. 



ABOUT the size of the preceding, or a little larger; 

 the prevailing colour light yellowish-brown ; the 

 upper wings with two white oblique bands, one of 

 them extending from the tip to the inner margin, 

 the other continued from the inner margin to the 

 anterior one, and terminating not far from the base, 

 the space between it and the base generally more 

 or less denuded of scales. The triangular space 

 between the two bands is clouded with brown and 

 white, and there is a transverse series of several 

 parallel fine brown zigzag lines, forming very acute 

 angles on a whitish ground ; the hinder margin of 

 the wing brown, with two rows of small white 

 arches, surmounted by a white ill defined line ; the 

 fringe likewise whitish. The hinder wings are some- 

 what dusky with a slight ochreous tinge, the fringe 

 white. 



