14 THE GENERA OF BRITISH MOTHS. 
1. Lrochilium Vespiforme (the Clear Under-wing) is considerably larger than the preceding, being the 
largest of the genus; but, independently of its size, it may be known by the semi-transparent brown of the 
anterior wings. The body is black, with a black tuft, and it has three yellow belts like the preceding species. 
The male has the antenne distinctly pectinated, and is said to have five belts. 
2. Trochilium Ichneumoniforme (the Six-belted Clearwing). The front wings are very strongly bordered 
with brown, and have a mark across the middle, joining the front and back border. At the points, the 
border extends into the wing, forming a deep brown tip; the body and tuft are black, with six yellow 
belts, the female being seven-belted. 
8. Trochilium Cynipiforme (the Yellow-legged Clearwing). The front wings of this species resemble 
those of the preceding, but the brown border is paler, and the insect is smaller. It may be more easily 
distinguished by the yellow collar round ‘the head, and the yellow tuft at the tail. In the specimens I 
haye seen, the black portion of the body had two yellow belts ; those described with four are probably of the 
other sex. 
4, Trochilium Chrysidiforme (the Fiery Clearwing). The fore-wings are broadly bordered with bright 
saffron colour, from which it takes its popular name. In the specimen I have seen, it has only one yellow. 
belt, and the tuft is black. 
5. Trochilium Scholieforme (the Large Clearwing). This is one of the species recently added to our 
list ; it was first taken near Llangollen, in North Wales. It is similar in size to Vespiforme, but distinguished 
from that insect by the black borders to the wings, and by a black bar across the centre, and a central 
wedge-like projection towards the base; it has two yellow rings round the black body, and the anal tuft 
is deep orange. 
6. Trochilivm Spheegiforme (the Black and White Horned Clearwing). The species may be at once dis- 
tinguished by the white ring near the tip of the antenne ; the fore-wings are bordered with bluish-black, 
and the black abdomen has a yellowish band, and a very broad fan-like black tuft at the tail. 
7. Trochilium Allantiforme (the Whitebelted Clearwing). This is one of the smallest species. It may 
be distinguished by being almost without the dark borders to the front wings, which are only marked 
with brown by a broad patch at the tips, and a central dot; the male has two nearly white belts round 
the black abdomen, and the tufted tail has a patch of orange in the centre. 
8. Trochilivim Myopeforme (the Red-belted Clearwing). This species may be readily distinguished from 
all the preceding by the broad red belt of the abdomen ; the palpi are black. 
9. Trochilium Culiciforme (the Large Red-belt). This species so closely resembles the preceding, that 
it can scarcely be distinguished, except in size, and by the colour of the palpi, which are dull orange, while 
those of Myopeforme are brown ; it has also the inner margin of the fore-wings reddish at the base. 
10. Trochitium Formiceforme (the Flame-tipped Red-belt). This species may be at once distinguished 
from the other ‘‘Red-belts” by the broad ved tip of the anterior wings. 
The genus Z'rochilium terminates the division termed Sphingide, or, as some still term it, Crepuscu- 
laria, including all the lepidopterous insects that have the antenne thickened towards the tip, but not 
clubbed. We now proceed to the great division, “ Lepidoptera nocturna,” the first family of which is that 
of the Hepiatide, 
DIVISION I.—LEPIDOPTERA NOCTURNA. 
THE FIRST FAMILY.—Herraum. 
Tue first genus of this family, Wepialus, is distinguished by the extremely short antenne, as will be seen 
in the species selected for illustration, The Caterpillars are naked .and grub-like in appearance, though 
regularly sixteen-footed. They feed on wood, and are found in the trunks or at the roots of trees. 
