238 ZYGjENID^ and BOMBVCIDiE 



All wings white, posterior wings immaculate. Primaries marked as 

 follows, with dark blackish brown, more intense than in C. Lecontei or 

 C Miliiaris. A costal stripe, not quite reaching the apex, and leaving 

 the costa very narrowly white. A similar stripe on the internal margin, 

 not quite reaching the anal angle. An oblique transverse band, con- 

 necting this stripe at the anal angle with the costal stripe across the 

 discal vein ; and from the centre of this band a branch runs towards 

 the apex, but does not quite reach it. Fringe on the outer margin, 

 somewhat dusky, and two small marginal brown dots about the 

 middle of the outer margin. 



Beneath white ; the costa yellowish. The transverse band reappears, 

 but more diffuse and broken. The other markings are nearly obsolete. 



Expanse of wings, 1. 80 inches ; length of body, 0.70 inch. 



Habitat. — Canada (W. Saunders). 



Described from a specimen kindly loaned by W. Saunders, Esq. 



EPICALLIA VIRGINALIS. (Page 70.) 



Since the publication of Part 3, in which this species was figured, I 

 have received two specimens from Arizona, almost identical, and in- 

 termediate, so far as the coloration of the secondaries is concerned, 

 between vzx. guttata (fig. 3) and the type (fig. 4). The spots on the 

 primaries are somewhat larger, giving the insect a paler look. My 

 friend, H. Edwards also informs me that the species, both the typical 

 form and var. guttata, are common at Portland, Oregon, flying 

 together in the streets of the town. 



ARCTIA BEHRII. (Page 75.) 



Having recently seen one of the types of Arctia Nevadensis, Grote, 

 in the collection of J. Akhurst, of Brooklyn, New York, and ascer- 

 tained its identity with this species, the synonomy must stand thus : 



Arctia Nevadensis, Grote, Proc. Ent. Soc. Phil. vol. 6, p. i, pi. i, fig. i . 



Arctia Behrii, Stretch, Z. and B. N. Am. p. 75. (1872.) 



The figure given by Grote does not represent a typical form, and 

 the specimens having been collected in alcohol (!) the color had been 

 somewhat discharged, so that the description varies somewhat from 

 the coloration of fresh specimens. It was from these causes that I 

 failed to identify the insect, though I compared them and noted the 

 peculiar identity in the color of the thorax, which is black and con- 

 colorous. 



