436 Mr. Hamilton H. Druce on 



side ; both .wings pure white, discal area of fore-wing very faintly 

 blnish-grey. Fore-wing with an ultra-median band composed of 

 rich brown dots, commencing on the costa and reaching below the 

 first median nervule. Hind-wing with a central circular band com- 

 posed of larger rich brown blotches from the costa to the inner 

 margin. A submarginal row of brown dots. A clearly defined, black, 

 anteciliary line common to both wings. Cilia of both wings pure 

 white. Thorax and abdomen olivaceous-brown above, pure white 

 below. Palpi white, terminal joint black. Legs white with black 

 spots. Antennae black, annulated with white. 

 Expanse, 1 inch. 



Hob. Chanchamayo, Peru, 2,000-7,500 feet. 



Type, Mus. Adams. 



Not closely allied to any with which I am acquainted, 

 but possibly belonging to the group containing ThccUc 

 aura, G. and S.* The figure is drawn Ih times natural 

 size. 



Thcda vesper, sp. nov. (Plate XI, fig. 8.) 



^ . Upper-side. Both wings uniform rich shining blue with even 

 deep black borders and a black spot at the end of the cell of the 

 fore-wing adjoining the costal border. Cilia of both wings black ; 

 lobe orange with some white hairs above and below. A faint white 

 anteciliary line between the lobe and the lower median nervure. 

 Under-side ashen-grey. Fore-wing with a clearly defined dark 

 brown, nearly straight, ultra-median line bordered outwardly with a 

 fine white line. Some submarginal shades between the median 

 nervules. Hind-wing with a rich brown, broader, much broken 

 line, reaching from the costa, near the apex, to the abdominal margin, 

 where it is angled, outwardly bordered with a white line. A large 

 reddish-orange patch at the anal angle and another near the margin, 

 between the tails, containing a black pupil. Some whitish sub- 

 marginal shades and a fine anteciliary black line. Cilia of fore-wing 

 brown ; of hind-wing whitish, tipped with grey. Tails black, tipped 

 with pure white. 



Expanse, li inch. 



Hab. Chanchamayo, Peru, 2,000-7,500 feet. 



Type, Mus. Adams. 



Not nearly allied to any species with which I am 



* Tliecla mim, G. and S., B.C.A., Lep. Rhop., vol. ii, p. 60, PI. LV, 

 figs. 21, 22 (1887). 



