LEPIDOPTERA HETEROCERA. 1207 



Group 4. 



Antennae thorace vix breviores. Alae amplae, macula maxima 

 cordata fasciaque vitreis ; anticae apud costam convexae, non fal- 

 catae, margine exteriore subrecto vix obliquo ; posticae valde latiores 

 quam longae, abdomen plus dimidio superantes. Mas. — Antennae 

 late pectinatas. 



Antennae almost as long as the thorax. Abdomen extending to 

 somewhat less than half the breadth of the hind wings. Wings 

 ample ; each with a very large heart-shaped vitreous spot (whose 

 concave side is towards the base of the wing), and with a vitreous 

 band like that of A. Arethusa. Fore wings convex in front towards 

 the tips, which are not falcate, almost straight, and very slightly 

 oblique along the exterior border. Hind wings^ery much broader 

 than long, very much broader than the fore wings ; spot hardly 

 larger than that of the fore wings. 



7. Attacus Betis. 



Mas. Ochraceo-fulvus ; thorax albo bifasciatus ; abdomen fas ciis 

 duabus lateralibus duplicatis albidis ; alee fascia vitrea intus 

 nigro extus ochraceo-fulvo marginata, fascia exteriore diffusa 

 nigricante subpurpureo conspersa, margine exteriore testaceo ; 

 alee anticce apud costam nigricantes albo conspersce, fascia 

 basim versus angulata extus nigro marginata, maculis duabus 

 subapicalibus una magna subpurpurea altera nigra elongata, 

 fascia exteriore angusta undulosa fusca ; posticce fascia basim 

 versus alba obliqua nigro extus marginata, fasciaque apud 

 marginem exteriorem angusta subrecta fusca maculis rufo-fus- 

 cis intus marginata, 



Male. Orange-tawny. Thorax with a white band in front 

 and another behind. Abdomen with a double whitish stripe along 

 each side. Legs partly clothed with white hairs. Wings with the 

 vitreous band bordered with black on the inner side, and with 

 orange-tawny on the outer side ; beyond the latter there is a diffuse 

 blackish lilac-powdered band; exterior border testaceous. Fore 

 wings blackish, and powdered with white along the costa, behind 

 which, towards the base, the white band which is common to the 

 species of this genus forms a right angle, and is bordered outwards 

 with black, its hind side almost joining the hind band of the tho- 

 rax ; near each tip a large lilac spot, which is accompanied hind- 

 ward on the outer side by an elongated black spot ; exterior border 



2 P 2 



