100 ILLUSTRATIONS OF UNFIGURED LEPIDOPTERA. 



Upper side of lower wing the same, except that the lustrous area covers entire 

 wing, barring the costal region and inner marginal edge. The lustrous area is 

 also less purplish than on fore wings, having a more bluish tinge. The hind 

 margin is bordered by a dark thread. At end of submedian nervure there is 

 a short, stumpy tail, not threadlike, but rather a jutting out of the wing area. 

 The nervures and nervules are distinctly darker than ground color. 



Under side of fore wing dead grayish brown, of a lighter shade than upper 

 surface. One-third distance from apex to base, there is a very slight suggestion 

 of a line of interspacial whitish lines, extending downward parallel to hind 

 margin. It is scarcely perceptible, however. 



Under side of hind wing of the same ground color as fore wing. The whitish 

 line extends downward to anal angle, being no more prominent than on fore 

 wings, scarcely perceptible. Just above the lower submedian nervule, close to 

 the margin, is a semi-circle of light tawny, not at all prominent, but quite per- 

 ceptible on close inspection. The basal area of the wing is dusted with dark 

 scales. 



Taken August 8, 1899. 



Thecla sadiei A. G. Weeks, Jr.^ 

 {Plate XLIV, Figure i.) 

 Habitat : Bolivia, Coroico district. Expanse : .80 inch. 



Head brown, with a white thread encircling eyes. Thorax dark blue above; 

 beneath, dark rich brown, nearly black. Abdomen dark blue above ; beneath, 

 white, tending to brown toward end. Antennae black, with white annul ations 

 at base of each joint ; tip tawny. Legs brown, with prominent white annula- 

 tions at each joint. 



Upper side of fore wing dead black. Below a line drawn from base upward 

 to centre of discoidal space and thence to a sixteenth inch from hind margin, 

 thence to inner margin, the color is a brilliant blue, with some lustre. 



The upper surface of hind wing is brilliant blue, with some lustre, excepting 

 the subcostal and apical area, which is black above a line drawn from base 

 straight to hind margin one-quarter distance below apex. At end of sub- 

 median nervure is a short black tail tipped with white, and at end of next 

 nervule above is a shorter tail. The hind margin is bordered by a black 

 thread. The nervures and nervules are black at hind margin. Inner marginal 

 area dark gray. 



1 Pr. New England Zool. Club, Vol. II, p. loi, December 30, 1901. 



