AMERICAN LEPIDOPTERA. 11 



ferences of structure between the species. Mr. Grote (1. c.) has also 

 written with regard to A. bicolor : "Should, on an examination of 

 actual specimens, our species be found generically distinct, the name 

 proposed by Mr. Walsh will prevail, and our species be known as 

 Sphingicampa bicolor." As yet there seems no propriety in adopting 

 this latter determination. 



Adelocephala quadrilineata, n. s. (Plate 1, fig. 2, 9 )• 



9 . Size, moderate ; form a little slenderer than A. bicolor, with 

 which latter epecies it conforms in appearance and habit. Head, 

 sunken in the prothoracic parts ; antennae, slender, short, and very 

 slightly thickened basally. Thorax, short and stout, globose and eleva- 

 ted, thickly scaled. Above, the head and body parts are bright ochreous 

 tawny ; beneath, the abdomen is of a slightly duller and darker color, 

 while the scales fringing the segments and anus are of a brighter taw- 

 ny ochreous shade. The tibiae and tarsi are of a dark lead color out- 

 wardly. 



Wings, full and rounded. Primaries, at base, bright ochreous taw- 

 ny, which color spreads along co:«ta and over the discal cell, forming a 

 diifuse darker shade about the discal cross-vein. Median space, paler 

 than the wing elsewhere, distinctly limited on either side by two trans- 

 verse determinate dark brown lines. The first of these is short, slightly 

 angulate at costa, thence running straightly, obliquely inwardly to in- 

 ternal margin. The second, long, emanating from costa at apical 

 fourth, and running straightly and very obliquely inwardly to internal 

 margin, which it joins at about the middle. Outside of this latter 

 line, the wing is again evenly bright tawny ochreous as at base, 

 while the sub-obsolete irrorations are more prominent and perceivable. 

 The external and internal margins are narrowly fringed with dark 

 brown. Undersurface, paler than upper. Over the base, centrally, is 

 spread a diffuse roseate patch ; here the scales are longer and hair-likfi. 

 Beyond the discal cross-vein, a brownish macular discoloration. A 

 single external transverse even dark brown line most distinct on costa, 

 fading towards internal margin. Externally, from the apices down- 

 ward, the wings are diffusedly shaded with a darker hue. 



Secondaries, above, largely bright and deep rose color, becoming 

 more intense in hue towards the base and along external margin, where 

 the scales are longer and more hair-like. Costa and external margin, 

 narrowly pale ochreous tawny. Fringes, very pale; thus quite unlike 

 those of the anterior wings. Undersurface, pale dull ochreous tawny, 

 obsoletely irrorate. A single brown band is drawn across the wings. 



