LEPIDOPTERA HETEROCERA. 583 



COSSUS BALCANICUS. 



balcauicus, Ld. Wien. Ent. Mon. vii. 22, pi. 1, f. 3. 

 Roumelia. 



Cossus STRIX. 

 strix, Cat. Lep. Het. vii. 1521. 

 a, b. Java. Presented by the Secretary of the India Board. 



COSSUS ? VALDIVIANUS. 



valdivianus, Phlp. Linn. Ent. xiv. 291. 

 Chili. 



COSSUS IMPEDITUS. 



Mas. Obscure cinerens ; palpi brevissimi ; antenna subpectinatce, 

 apice serratce ; tibia posticce calcaribus duobus longis apicali- 

 bus ; alee anticce angustce, nigro conspersce, lineis quatuor 

 fuscescentibus valde indeterminatis, )a 2a Saque undulatis, 4a 

 angulosa; posticce albidce. 



Male. Dark cinereous, paler beneath. Palpi extremely short. 

 Antennae slightly pectinated, serrated towards the tips. Abdomen 

 extending beyond the hind wings. Legs moderately stout ; hind 

 tibiae with two long apical spurs. Fore wings narrow, miuutely 

 speckled with black, very much longer than the hind wings; four 

 very indistinct transverse brownish lines, of which the first, second 

 and third are undulating and the fourth zigzag ; exterior border 

 nearly straight, very oblique. Hind wings whitish. Length of the 

 body 7 lines ; of the wings 14 lines. 



a. Cape. From M. Drege's collection. 



COSSUS VINCTUS. 



Mas. Cinereo-fuscus ; palpi brevissimi ; antenna graciles, sub- 



setulosce ; abdomen ulas posticas longe superans, fasciculo 



apicali elongato ; tibia? posticce quadricalcarata ; alee antica 



fuscescente-cinerea,, nigro reticulata, fascia nigra obliqua 



excavata ; posticce cinerea, 



Male. Cinereous-brown. Palpi extremely short. Antennae 

 slender, very minutely setulose. Abdomeu extending much beyond 

 the hind wings ; apical tuft thick, composed of long hairs. Legs 



