THE GENERA OF BRITISH MOTHS. 119 
if any, so that for convenience sake it would have been better to allow the two species about to be described, to 
be joined to the genus Hydrelia, which seems to have greater claim to them. 
Asthena luteata (the Small Yellow Wave, No. 9.). The larva of this pretty little insect is unknown. The 
perfect moth appears in June, and is rather common. It has been recently taken in great abundance in the 
Cotswold district, at Halton—and in plenty at York, Brighton, and in many other widely distant localities. 
The other species is A. sylvata (the Waved Carpet), easily distinguished from Juteata by its gray colouring 
and more rounded wings, the markings being very similar. 
The nineteenth Sub-Family of the Geometride is that of the Timandridi, containing six genera. 
The genus Nemoria. In this genus the antenne of the male are slightly ciliated, the body smooth, the 
wings small, and more or less tinged with green, and the hinder pair being slightly angulated. The Caterpillar is 
slender with the head bifid, and two low spines on the second segment. The Chrysalis is formed between leaves. 
There are two British species. 
Nemoria viridata (the Small Grass Emerald). The Caterpillar of this pretty species is flesh-coloured, with 
a dark dorsal line, and feeds on Bramble and Hawthorn in October, the moth appearing in the following May and 
June. It was formerly taken in the New Forest, and considered rare. More recently it has been taken rather 
plentifully in the Lake district, at Lyndhurst, and near Lancaster. 
The other species, N. cloraria (the Middle Grass Emerald), has been supposed to be British on the strength 
of a specimen captured by Mr. Stephens, but it is omitted in many British catalogues. 
The genus Thalera. The insects assigned to this genus have the antenne of the males ciliated, the 
abdomen slightly crested, the wings dull-green—the hind ones rather angulated and their fringes spotted. The 
larva is of long proportion, and rough. The Chrysalis is formed in a cocoon amongst leaves. The only British 
species in this genus was formerly placed in the same genus with the two preceding species, but has been 
separated and placed in Hiibner’s genus Thalera, on account of some of the characters just described. 
Thalera Astivaria (the Common Emerald, No. 11). The Caterpillar of this species (No. 12), feeds on the 
Oak and White-thorn, in May ; the moth appearing in June and July. It is a common species in woods ; and 
has recently been taken in great abundance at Stowmarket, Cambridge, Kingsbury, and in less profusion at 
Plymouth, Manchester, and many other places. 
The genus Timandra. The insects assigned to this genus have the antenne of the males ciliated like 
those of the last genus, but they differ in having the fore-wings more pointed, and traversed by bands—and being 
without the peculiar green tints which distinguish the species belonging to the preceding genus. There are three 
British species. - 
Timandra imitaria (the Small Blood Vein). This pretty species is placed by some entomologists in the genus 
Acidalia, The larva is unknown. The moth appears in July and August. It is a common and widely dispersed 
species ; Exeter, the Cotswold district, and many other places being cited for its recent capture in abundance. 
There are two other species, 7. exemptaria (the Sub-angled Wave), and 7. emutaria (the Dusky Wave). 
The genus Macaria. In this genus the antenne of the males are either simple or slightly pubescent ; 
the fore wings with the tip slightly hooked, and having a waved indentation below the tip. The hind wings 
have a disposition to a caudal angle. The Caterpillar is rather short, but not humped nor attenuated. The 
pupa is formed in a cocoon, on the ground, or inclosed in a web among leaves. There are three British species. 
Macaria notata (the Peacock, No. 4). The Caterpillar of this prettily marked moth (No, 15) feeds upon 
the Sallow, and may be looked for in September. The perfect insect appears in the following June. It should 
be looked for in woods, especially in Kent and Surrey, but it is not common. It has, however, been recently 
taken near Plymouth, in some abundance, and in many other parts of the country more sparingly. 
The other species are the following—M. alternata (the Sharp-Angled Peacock), which very closely 
resembles Notata, except in being smaller, deeper coloured, and having all the markings more dusky ; and 
A. liturata (the Tawny-barred Angle, No. 16), which is the largest species, and of a general tawny tone, with 
deeper tawny bands, and having at the tips of the anterior wings a conspicuous white patch. 
The genus Ania. The male insects of this genus have the antenne sub-serrated; the wings are rather 
short, and have the anterior pair acute at the angle, and prominent in the middle of the fringed edge ; the 
