42 Dr, A. G. Butler on some new 



Thirmida gigantea^ sp. n. 



Primaries orange-yellow, the costal margin, veins, and 

 inner margin black ; the apex very broadly slate-colour : 

 secondaries semihyaline slate-colour ; the veins, costal margin, 

 and apex blackish. The head and antennae black ; thorax, 

 abdomen, and legs slate-colour. 



Expanse 2j inches. 



Hah. Bolivia {Mus. Bruce). 



This species is allied to T. dimidiata^ Walk. 



Fam. Acontidae. 

 EugrajyTiia splendens, sp. n. 



Male. — Primaries cream-colour ; a fine brown line crosses 

 the wing about the middle from the costal to the inner margin, 

 beyond which is a curved row of reddish-brown spots, those 

 nearest the apex being the brightest ; two black dots streaked 

 with blue close to the anal angle ; a wide fawn-coloured line 

 extends from the apex to the end of the cell, also a marginal 

 fawn-coloured line along the outer margin ; the fringe cream- 

 colour : secondaries bright chrome-yellow, with three black 

 spots close to the apex ; the fringe cream-colour. Antennai 

 black ; head and thorax cream-colour ; abdomen chrome- 

 yellow. 



Expanse \yo inch. 



Hah. Ecuador, Guayaquil {Dolby-Tyler ^ Mus. Druce). 



This beautiful species is allied to E. effusa^ Druce, from 

 Sarayacu, but very distinct. 



V. — On some new Pierine Butterjlies from Colombia. By 

 A. G. Butler, Ph.D. &c., Senior Assistant-Keeper of the 

 Zoological Department, British Museum. 



Early in the present year a small collection of insects from 

 Colombia was submitted to the staff of the Department for 

 examination. Among the Butterflies I selected, as desiderata 

 to the Museum series, examples of three species of Pierinse 

 belonging to the genera Mylolhris and Pieris; two of these 

 proved to be undescribed. 



Mylothris (Section Perrhybris), Hiibn. 

 I cannot see my way to a generic separation of the New- 



