I'YRALID.E. AGKOTKRA. 27 



males, simple in the females : head moderate : eyes large : thorax subovate : 

 wings entire, glossy, disposed in a broad triangle during repose ; anterior 

 sublanceolate-triangular ; posterior ovate triangular; all of very lively 

 colours, and having long cilia: body slender in the males, and furnished with 

 a small tuft, acute in tlie females: legs moderate; posterior tibiw furnished 

 with two pair of spurs. 



Exclusively of differences in the structure and clothing of the palpi, 

 &c., this pretty genus may be recognized by having the cilia very 

 long and of a golden hue, concolorous with the hinder margin of the 

 wings ; the latter of a beautiful purplish-red with gold coloured costal 

 spots and faint transverse streaks. 



Sp. 1. costalis. Alls rufo-purpurasceniibus, fasciis duabus anticarum abbreviatis 

 margineque externo aureo-Jlavis. (Exp. Alar. 8 — 10 lin.) 



Ph. costalis. Fabricius. — Agrotera.-* costalis. Steph. Catal.'n. 160. N'o. 6779- 



Wings purplish-red and glossy ; anterior with a rather large golden-yellow 

 spot on the costa before the middle, carried on as a slender streak to the 

 inner margin, a second larger and subquadrate spot of similar colour behind 

 the middle, also carried on to the inner margin, as a slightly waved streak ; 

 near the hinder margin is a very faint yellowish waved line ; and the hinder 

 margin itself, with the cilia, is bright golden-yellow : posterior wings with 

 two, more distinct, yellow streaks, with the posterior margin and cilia also 

 bright golden-yellow. 



The caterpillar feeds on the poplar ; the imago appears from the middle of 

 July to that of August, in gardens. 



Not very uncommon within the metropolitan district in houses and 

 gardens; I have taken it at the Hermitage and also in London 

 itself, and at Hertford and Coombe Wood. 



Genus CCLVIII. — Agrotkra, Schrank. 



Palpi short, recurved, approximating, and forming a kind of mask, densely 

 clothed with scales, placed irregularly thereon, triarticulate, the apical joint 

 slightly exposed ; the basal and intermediate ones curved : viaxilla: rather 

 long. AntennuE long and slender, ciliated in the males, simple in the females : 

 head globose : eyes small, ovate : thorax slender, pilose : wings entire, anterior 

 elongate, very acute, the hinder margin slightly repanded and the costa rather 

 suddenly incurved ; posterior obscurely indented on the hinder margin : 

 body long, slender towards the apex, and furnished with a large tuft; shorter 

 and acute at the tip in the females: legs very long and slender; posterior 

 tibiiE with two pair of spurs. 



