300 Zoological Society : — 



tion of the wing being dnller coloured than the disc, and irrorated in 

 both sexes towards the hinder angle with brown scales. Hind wings 

 entire along the outer margin, with a nearly straight dusky striga 

 running across the centre a short distance preceding the vitreous lu- 

 nule, with a slender waved lilac-brown striga half way between the 

 lunule and the outer margin, and with a series of submarginal brown 

 curved streaks, followed by patches of flesh-coloured scales. On 

 the underside the male has the wings chestnut-grey, the disc more 

 strongly suffused with red, with the striga and waved lines of the 

 upper side slightly indicated ; the female on the underside is greyish 

 buff slightly shaded with brown, especially in the middle, with the 

 dark markings of the upper side slightly indicated, the legs flesh- 

 coloured. The antennae of the male are short and about 26-jointed, 

 each of the joints (except two or three at the tip) emitting four long 

 branches. The female antennae are 25-jointed, each joint emitting 

 a short branch on each side at its extremity. The female has the 

 branches of the antennae shorter than those of the male. 



Saturnia Janeira, Westw. S. alls anticis apice acuminatis brun- 

 neo-ferrugineis, striga sub-basali interrupta lutescenti, ocellofusco 

 luteo-annulato strigaque nigra e medio marginis interni ad apicem 

 extensa ; posticis supra castaneo-rufis, margine postico fusco ocello 

 magna concolori maculam ovalem nigram includente fulvoque extus 

 annulate. 



Expans. alar, antic, uuc. 3f . 



Hab. apud Rio Janeiro, Brasiliae. In Musaeo Britannico. 



This species is at once distinguished by the singularly acute fal- 

 cated form of the fore wings, which peculiarity is probably less 

 strongly marked in the female ; supposing as I do that the unique 

 specimen in the British Museum is a male, although the compara- 

 tively narrow antennae might seem to indicate the opposite sex. The 

 fore wings on the upper side are dark rich red-brown, the apical mar- 

 gin being dark ashy. They are marked near the base with a much- 

 interrupted and slightly-indicated luteous striga ; in the middle is a 

 moderate-sized oval ocellus, dark brown, surrounded by a slender 

 ring of pale luteous scales, and with a very small greyish white lu- 

 nule in the middle ; beyond the ocellus is a regular black line run- 

 ning from the apex to a little beyond the middle of the inner mar- 

 gin, where it is marked with a few pale scales. Hind wings on the 

 upper side rich chestnut-red, with the outer margin brown, and 

 clothed with brown hairs along the anal margin ; in the middle is a 

 large ring of black, outside of which is a slender circle of fulvous 

 scales, and in the centre is a rather small oval black spot crowned 

 with a slight white lunule. On the under side the wings are dark 

 fulvous-red, with a dusky apical margin, the fore wings with a black 

 central circular spot inclosing a white dot, and the hind wings with 

 a minute white transverse dot visible on the upper side in the centre 

 of the large ocellus. The antennae are short, 26-jointed, each joint 

 (except three or four of the terminal ones) emitting four moderately 

 short branches, gradually shortening towards the tip. 



