1222 CATALOGUE OF 



spurs long, slender. Fore wings acute, rather narrow ; costa slightly 

 convex towards the base ; exterior border hardly convex, rather 

 oblique. Hind wings with the costa dilated towards the base; mid- 

 dle part of the exterior border produced into a short broad tail. 



Thelda desckiptalis. 



Mas. Pallide cervina ; abdominis segmenla argenleo-albo mar- 

 ginata ; tibice posticce nigro fasciculatce ; alee iridescentes, 

 lineis duabus fuscis subundulatis ; anticce albce, cervino mar- 

 ginatce, linea basali fusca Jlexa, costce dimidio apicali albo 

 maculis quinque cervinis fusco marginatis, maculis duabus 

 fuscis subcostalibus, maculis duabus fuscis marginalibus albo 

 marginatis ; posticce macula marginali fusca albo marginata* 



Male. Pale fawn-colour. Abdomen with the hind borders of 

 the segments and the under side silvery white. Legs silvery white ; 

 anterior tibiae mostly blackish ; hind tibiae with a black tuft. Wings 

 iridescent, with two brown slightly undulating lines ; marginal line 

 brown, white-bordered. Fore wings mostly white, except along the 

 costa and along the exterior border ; a brown bent line near the 

 base; apical half of the costa white, with five fawn-coloured brown- 

 bordered spots which successively decrease in size ; two brown sub- 

 costal spots, the second connected with the first costal spot ; two 

 brown white-bordered spots, one on the exterior border before the 

 middle, the other on the end of the interior border. Hind wings 

 with a brown white-bordered spot on the exterior border near the 

 interior angle. Length of the body 4 lines ; of the wings 9 lines. 



a. St. Domingo. From Mr. Tweedie's collection. 



Genus OROSA. 



Fcem. Corpus sat robustum. Proboscis brevis. Palpi gra- 

 ciles, squamosi, oblique ascendentes, verticem paullo superantes ; 

 articulus 3us lanceolatus, 2o vix brevior. Antennae breviusculae, sat 

 graciles. Abdomen alas posticas paullo superans. Pedes glabri, 

 breves. Alae anlicae breviusculae, latiusculae, apice subrdtundatae, 

 costa convexa, margine exteriore vix obliquo. 



Female. Body rather stout. Proboscis short. Palpi squa- 

 mous, slender, obliquely ascending, as long as the breadth of the 

 head, rising a little higher than the vertex ; third joint lanceolate, 

 nearly as long as the second. Antennae rather short and slender. 

 Abdomen extending a little beyond the hind wings. Legs smooth, 



