400 Zoological Society. 



The centre of these wings is ornamented with a small oval ocellus, 

 the basal half of which is covered with black scales, and the outer 

 half is vitreous : between this and the base is a very curved and irre- 

 gularly dentate dark striga, and immediately behind the eye is a nearly 

 straight, slender, brown bar. This is succeeded by slender black 

 wavy bars, the space between which and the apex of this wing is di- 

 vided as it were into three compartments, the first of which is covered 

 with small brown scales ; the second is paler, and covered with very 

 fine black speckles, and the apical part is much darker, with large 

 black speckles ; the apical margin of the fore-wings is slightly waved. 

 The hind-wings are entirely covered on the upper side by a most 

 magnificent eye-like spot, surrounded by successive rings of various 

 colours. The oval pupil is black, but the part furthest removed from 

 the body is denuded of scales, and would be vitreous were not the 

 underside of the wings clothed with scales : this is surrounded by a 

 narrow fulvous iris ; then black ; then a broader oval ring of dirty 

 clay colour ; then a narrow oval of pale flesh-colour ; then a broad, 

 rich, claret, oval ring : between this and the base of the wing is first 

 a bar of flesh-colour, then black, shaded into claret ; towards the ex- 

 tremity of the wing the claret is succeeded by a half-ring of flesh- 

 colour ; then a narrow one of black ; then of pale buff stone-colour, 

 and another moderately broad of grey speckled with black, extending 

 to the extremity of the wings. The thorax is dark and rich brown 

 coloured, with two white bands across the neck and two across the 

 extremity of the thorax whitish ; the abdomen is buff, with black 

 dots. The margin of the wings is scalloped. 



Beneath, all the wings are very pale buffish white with dark speckles ; 

 the fore-wings are marked nearly as on the upper side, but the hind- 

 wings have only a very small eye in the centre, having a black pupil 

 with a fulvous orbit surrounded by a slender black circle ; immediately 

 connected with the posterior part of this eye is a curved row of brown 

 arches, between which and the apex of the wings is another and more 

 slightly marked series of black scallops. The palpi are distinct, 

 forming a small brown muzzle, but they are not visible from above ; 

 they, as well as the rest of the head, are brown. The spiral tongue 

 appears to be wanting. The antennae of the male are considerably 

 elongated, with the rays bent backwards instead of lying flat, and 

 there are eightv-eight rays on each side of the antennae, the rays ex- 

 tending to the tip, so that the antennae are composed of about forty 

 four or forty-six joints. The antennae of the female are setaceous, 

 and only slightly bipectinated, being gradually more slender from 

 about one-third of the distance from the base to the apex, each joint 

 emitting four rays, the joint at each point of emission being swollen. 



The female has the wings rather shorter, and not at all emarginate 

 along the apical margin. 



Sp. 22. Saturnia nictitans, Fabr. S. alis margine apicali 

 integro, fusco incarnatis medio obscuriore, striga tenuissima 

 angulata prope basin alteraque recta subapicali fuscis punc- 

 toque parvo medio vitreo ; posticis concoloribus ocello magno 



