THYREUS. 155 



rounded angle in the middle, with a slight excavation in front and 

 two shorter and more distinct indentations behind. Hind wings 

 rounded at the tips; exterior border slightly denticulated, some- 

 what excavated toward the interior angle. 

 i 



1. U. ? japyx Cramer, I, 137, pi. 87, f. C. Walker, C. B. M. 162. 



Ferruginous brown. Abdomen purplish with testaceous bands 

 on the hind portions of the segments and a white transverse band 

 at the base of the abdomen. Thorax dark brown. Anterior 

 wings dark brown from the base to the middle, with two somewhat 

 roseate, separated, oblique lines crossing the middle of the disk 

 and a round spot at the base margined with roseate; terminal por- 

 tion of the wing greenish with a black spot on costa at about the 

 origin of the post-apical nervule, another beneath the tip on pos- 

 terior margin and a larger one at the inner angle, containing a 

 small blue spot. Posterior wings dark brown, somewhat roseate 

 on inner margin, with a black terminal line. 



THYREUS SWAINSON. 



The body is obtuse, broad and stout. The head is moderate, 

 the front obtuse, nearly vertical, uniformly broad and thickly 

 haired; the palpi very hairy, rather short and obtuse; the eyes 

 small : the tongue, when unrolled, reaches to about the fourth or 

 6fth abdominal segment; the antenna taper at the extremity and 

 end in a long hook without seta. The abdomen is broad and 

 rather short, a little more than once and a half longer than the 

 thorax, semi-oval in outline, tufted with terminal and lateral tufts. 

 The thorax is thick, hairy, globosely rounded in front with meta- 

 thoracic sub-tufts. The wings are narrow and rather long. The 

 anterior in length equal to that of the body, truncate at the tips, 

 angulated opposite the medio-superior nervule, excavated from 

 post-apical to superior and doubly excavated from the superior 

 nervule to the inner angle. Posterior wings, tip rounded, hind 

 border denticulated and the inner angle somewhat salient and 

 acute. Male. Antennce ciliferous. Female. Almost cylindrical 

 and simple. 



