THE GENERA OF BRITISH MOTHS. 147 
The fourth section of the genus (Hemimene) contains Z. Lathyrana, E. compositella, EB. internana, and 
E. perlepidana. 
The fifth section of the genus (Selanea) contains #. Leplastriana, E. Heegerana, E. coniferana, B. fissanc, 
and £, Dorsana. 
The genus Dichrorampha. This genus, established by M. Guénée, contains eleven British species of well- 
defined and tolerably homogeneous character. The antenne of the perfect insect are simple, the palpi rather longer 
than the head. The anterior wings are twice as long as broad, and have the hind margin indented before the 
external angle. The fold in the fore wings of the males is half the length of the wings. The Caterpillars, as far 
as known, are root feeders. 
Dichrorampha Petiverella (the Petiverian T, No 13). The caterpillar of this pretty species feeds on the 
roots of the Millefoil (Achillea millefolia). It is pinkish-white, with the head brownish, and is found in April, 
and again in November, The Moth appears in June and July, and is very generally distributed and very 
common, 
The other species are, D. Sequana (the Silver Blotch T), D. Politana (the Shining Blotch-back T, 
D. alpinana (the Gold-fringed T), D. simpliciana (the Plain Silver-fringed T), D. acuminatana (the Dark Silver- 
fringed T), D. saturnana (the Dingy T), D. plumbagana (the Leaden-fringed T), D. wlicana (the Furze T), 
D. consortana (the Dwarf T). 
The genus Eucelis. The insects assigned to this genus have the palpi much longer than the head. The 
front edge of the fore wings arched at the shoulder, and rather more than twice as long as broad. There is but 
one British species. 
Eucelis aurana (the Double Orange-spot T, No. 14). This pretty insect appears in June and July, especially 
in the bright sunshine, where the common Umbellifere are abundant, such as the Cow-parsnip, &e. It is found 
near London, and as far north as Renfrewshire. 
The genus Hemerosia. The insects assigned to this genus have the antenne remarkably robust, and the 
palpi long and extending considerably beyond the head. The wings are twice as long as broad, and arched at 
the front edge towards the shoulder. There is but one British species. 
Hemerosia Rheediella (the Rheedian T, No. 15). The Caterpillar of this species feeds on the foliage 
of the Apple and Hawthorn. The Moth appears in May and June, and is widely distributed, though not very 
common. 
The genus Grapholita. Many of the insects now assigned to this extensive genus were formerly included 
in the genus Carpocapsa. They are distinguished by slender and simple antenne, the palpi longer than the head, 
the wings twice as long as broad, and by the characteristic markings. There are thirteen British species assigned 
to this genus in the system which I am following. 
Grapholita Albersana (the Brown-cloaked T, No. 16). The Caterpillar of this species feeds on the folded 
leaves of the common Woodbine in August. The perfect insect appears in May and June. It is rarely found in 
the middle or more northerly counties, but is widely distributed in more southern localities. 
The other species are G. Ulicctana, which flies in swarms about Furze-bushes in May and August ; 
G. asseclana ; G. Juliana ; G. Hypericana, the Caterpillars of which feed on Hypericum ; G. Winmerana, which 
is rare, and the Caterpillars of which feed on Sea Wormwood ; G. Lacteana ; G. Scopoliana ; G. Hohenwarthana ; 
G. Bmulana ; G. cecimaculana ; G. expallidana ; and G. pupillana, the Caterpillars of which feed in the roots 
of Artemisia maritima on the south coast. 
The genus Thiodia. The insects assigned to this genus have their antenne simple, the palpi rather longer 
than the head, the wings moderately broad for this group, and the colour generally of different shades of subdued 
orange or yellow. There is only one British species. 
Thiodia citrana (the Lemon T, No. 17). This rare insect has been taken at Southend (Essex) and Lytham 
(Lancashire), in places where the Rest-harrow is abundant, 
