^"l83o'"'J PROCEEDINGS OF THE NATIONAL MUSEUM. 409 



lu synoptic form the species separate as follows : 



All tlie veius white marked NIVEIVENOSA. 



Median vein and branches to t. p. line white marked ; a heavy black line 



or .shade connecting the median linea stipata 



None of the veins white. 

 No connecting line between median lines. 



Color brown to grayish brown ; claviform distinct, black, ordinary 



spots black marked . passer 



A narrow black line connecting the median lines. 



Secondaries white, with a narrow dusky margin burgessi 



Secondaries dusky longula 



The species of Xylophasia are much more numerous and separate 

 readily into groups or series which may be typified by some of the 

 more common species. The groups will be roughly defined here, and 

 under separate headings the species will be described. 



Group vultuosa is readily recognizable by the character of the mark- 

 ings in the terminal and subterminal space. The former is darker and 

 sends into the s. t. space two spurs, giving the whole the appearance 

 of two triangular dark shades. The median lines are incomplete or 

 punctiform. 



Group finiUma has a more even ground color, the median lines dis- 

 tinct, while the s. t. line is indefinite or obsolete, and there is no trace 

 of the triangular dark patches. 



Group sputatrix contains species in which the transverse lines are 

 obsolete or only traceable, never distinct, while the reniform and 

 sometimes the orbicular are white marked, blotchy. 



Group devastatrix has the transverse maculation distinct, the termi- 

 nal space concolorous or paler, never darker ; s. t. lines preceded by a 

 series of sagittate black, spots which are sometimes confluent. 



Group alticola is represented by an evenly colored species in which 

 all the maculation is distinct on an even ground not emphasized by 

 darker shadings. 



Group arctica has also the transverse maculation distinct, but the 

 s. t. space is j^aler than the median or terminal space, and the latter 

 is darkest. The s. t. line is sometimes preceded by a darker shade, 

 but never by sagittate spots, As compared with the preceding the 

 species of this group have the apices somewhat more marked and the 

 wings more distinctly trigonate. 



Group perpensa is somewhat aberrant and is distinguished by a longi- 

 tudinal black shade from the base to the t. p. line. 



None of the preceding species have in the s. t. line a clearly defined 

 W mark. All the following are so distinguished, the outward inden- 

 tation of the s. t. line being marked on veins three and four. 



Group cariosa contains those species in which the secondaries are of 

 various shades of gray to smoky brown, while group inordinata con- 

 tains those species in which the secondaries are yellow, with a black 

 outer marginal band. 



