OK NORTH AMKKICA. 61 



B0MBYCID51. 

 ARCTIINS;. 

 Genus CALLIMORPHA, Latreille. 



" Fore wings usually with two subcosto-marginal nervules from the 

 disc, and a costal cell formed by the second branch, sometimes much 

 contracted and narrower and placed above the discal vein or exterior 

 to the disc; in this case there is but one marginal nervule from the disc. 

 The post-apical nervule arises either about midway between the end of 

 the costal cell and the apical nervulet, or from the end of the cell. The 

 subcosto-inferior and the discal arise at a common point, the latter 

 curved. Median vein four-branched, (the origin of the first, second, 

 and third branches close together and equidistant,) the posterior nervule 

 remote from the penultimate branch. Hind wings broader than the 

 fore wings; neuration arcticeform, the subcostal becoming furcate exte- 

 rior to the origin of the discal vein. Primaries triangulate, twice as long 

 as broad; costa slightly curved, apex square, hind angle slightly rounded. 



" Head moderate, free, smooth; with ocelli. Face and vertex nar- 

 row. Eyes rather large and prominent; antennas slender, filiform and 

 ciliated in both sexes; labial palpi somewhat exceeding the clypeus, 

 rather porrected but subascending, smooth, and towards the base pilose; 

 the middle and basal joint nearly equal, the terminal joint quite short 

 and ovate. Tongue as long, or nearly as long, as the thorax beneath. 



"Body slender; thorax smooth; patagia cylindrical or revolute, 

 scarcely ascending above the vertex and pilose; breast and abdomen 

 smooth; legs rather slender, the tibial spur of the anterior concealed; 

 hind tibise with four moderate spurs, longer than the hind femora." 

 Clemens, Proc. Acad. Nat. Sci. Phil, p. 535, i86c. 



The American species of this genus are white or luteous, with 

 brown markings, while the European forms, such as hera and dommula 

 are ornamented with red and green. The three species found in our 

 limits may be tabulated thus : (They all occur in the Atlantic States.) 



* Posterior wings ocherous. 



Anterior wings with white and brown markings - C. clymene. 

 " " with brown markings - C. inter rupto-7na7tginaia. 



* Posterior wings white. 



Anterior wings white with brown markings - - C. Lecontei. 



