136 THE GENERA OF BRITISH MOTHS. 
The fourth division also consists of a single species, which accords in general character with Hiibner’s 
genus Nephodesme ; this is L. Brandcriana (the Branderian T). 
The genus Dichelia. The insects assigned to this genus have the antenne rather robust, but generally 
simple, or very slightly pubescent ; the fore wings are rather less in length than in the genus Zozotenia ; they are 
abruptly arched from the shoulder at the front edge, The hind wings are rather small. The Caterpillar is 
unknown, There is but one British species. 
Dichelia Grotiana (the Grotian T, No. 2). This insect appears in June ; it is rather rare, and local, but 
is very widely distributed in the south of England. 
The genus Amphisa. The insects assigned to this genus have the antenna minutely pectinated, the palpi 
long, the fore wings of long proportion, and more lanceolate in the females than the males. The front of the 
wing is less arched at the shoulder than in other genera of this family, The Caterpillar is unknown, There are 
two British species. 
Amphisa Gerningiana (the Gerningian T, No. 3). The Larva of this species is said to feed on Vaccinium, 
the Common Bilherry. The perfect insect appears in Junc, and again in September, and is found in the midland 
and northern counties, and in Scotland. 
The other species, A. prodromana (the Early T), is easily distinguished by its gray colour. 
5 
The genus @neetra. The insects assigned to this genus have the palpi very much longer than the head ; 
the anterior wings long in proportion to their breadth. The front of the wing strongly arched from the shoulder. 
There is but one British species. 
Grectra Pilleriana (the Vine T, No. 4). The Caterpillar of this species feeds upon the seeds of the 
Stinking Iris (/ris fetidissima). The perfect insect appears in July, but is very scarce. It has recently been 
taken near Ventnor in the Isle of Wight. 
The genus Sarrothripa. The insects assigned to this genus have the antenne filiform in both sexes. The 
fore wings are of very long proportion, and much arched in front in springing from the shoulder, There is but 
one British species. 
Sarrothripa revayana (the Large Marbled T, No. 5), is the Tortrix degenerana of Miibner. It is an extremely 
variable species, twelve of the most distinct looking varicties having been named as species by distinguished 
English and Continental entomologists. | The Caterpillar (No. 6) feeds on the Sallow, forming a cocoon as shown 
at No. 7. The Chrysalis is represented without the cocoon at No. 8. The Moth appears in August and October, 
and sometimes as early as July, and as late as December. It is found near London, in the New Forest, and in 
other localities. 
The genus Oxigrapha. The insects assigned to this genus have the palpi long and thickly clothed with 
scales. The fore wings are much waved at front edge, which is also partially clothed with hairs. The colour of 
the wings is gencrally green, or tinted with green, and they have raised tufts of scales. The Caterpillar is 
unknown. There are four British species. 
Oxigrapha literana (the Sprigged Green T, No. 9). This is a most variable species, six of the varicties 
having received names as distinct species, several of these differing again so much as to have received several 
different names by different authors. 
The other species are O. Scotana, which is of grayish tone ; O. Scabrana, which is also gray, but may be 
distinguished hy the greater roughness of the wings caused by the raised tufts of scales ; and O. Boscana, which is 
of a much whiter tone than either of the other species. . 
The genus Peronca. The insects of which this genus is formed haye the palpi twice as long as the head ; 
and the fore wings are more than twice as long as wide, and have generally a light streak along the back edge. 
They have also several tufts of raised scales, but have not the hairs along the front edge which distinguish the last 
genus. There are thirteen species in this genus, and all of them are so extremely variable, that without figuring 
each species, which is not within the province of this work, it is quite impossible to give an adequate idea of the 
specifie differences, much more of the character of the endless varieties. I must-therefore be content with giving 
a single example, sclecting one which will best represent the general characteristics of the genus. 
Peronea cristana (the Button T, No. 10), has a tuft of whitish scales in the centre of the fore wings in 
