LEPTDOPTEEA HETEROCERA. 343 



perobliquo. Mas. — Antennae dense pubescentes, non pectinatae. 

 Sexualia magna. Fcem. — Antennae graciles, simplices. 



Palpi prominent ; third joint full one-third of the length of the 

 second. Antennae long. Fore wings narrow, somewhat acumi- 

 nated, very oblique along the exterior border. Male. — Antennae 

 thickly pubescent, not pectinated. Abdominal appendages large, 

 Female. — Antennae slender, simple. 



87. Agrotis costalis. 



Mas et foem. Ferruginea ; abdomen testaceum, apice cervinum ; 

 tarsi testaceo fas ciati ; ala? anticce casta maculaque orbiculari 

 testaceis, reniformi testaceo marginata. 



Ferruginous. Abdomen testaceous, fawn-coloured at the tip. 

 Tarsi with testaceous bands. Fore wings testaceous along the 

 costa ; orbicular spot testaceous ; reniform spot with a testaceous 

 border. Hind wings whitish ; veins and border testaceous. Var.fi. — 

 Fore wings with ferruginous marks along the costa. Var. y.— Fore 

 wings pale ferruginous along the costa ; orbicular and reniform 

 spots whitish instead of testaceous. Length of the body 7 lines ; of 

 the wings 16 lines. 



a — d. Isle Tristram da Cunha. 



Group 2. 



Antennae maris et fcem. simplices. Thorax pilosissimus. Ab- 

 domen alas posticas longe superans. Alee anticae subtrigonae, 

 breviusculae, apice acuminatae. 



Antennae simple in both sexes. Thorax very hairy. Abdomen 

 extending some distance beyond the hind wings. Fore wings 

 rather short, nearly triangular, acuminated at the tips. 



88. Agrotis pilifera. 



Obscure ferrugineo-fusca ; abdomen pallidum ; alee anticce inno- 



tatm ; postic&fusco-cinerece. 



Dark ferruginous-brown. Abdomen paler. Fore wings with- 

 out any marks. Hind wings brownish cinereous. Length of the 

 body 7 — 9 lines ; of the wings 16—20 lines. 



a — c. Isle Tristram da Cunha. 



