N. ZOOL. GAL.] NATURAL HISTORY. 
151 
with which they fly. This order contains some of the most 
brilliant insects, as the Diamond-beetle, Buprestis, &c. 
The Orthoptera, (Cases 3 and 4,) the upper wings 
of which are generally like parchment, and fold over 
each other at the edge, as the Cockroaches, the Pray¬ 
ing Insects ( Mantis ), Walking Sticks ( Phasma ), Crickets 
and Locusts. In the latter Case are also exhibited the 
Neuropterous Insects, which have usually two pairs of 
similar netted wings, as the Dragon-flies, Ant-Lion, &c., 
and the Hymenopterovs Insects, which have four wings, 
with fewer nervures than in the preceding order, and all 
taking their origin from the base of the wings ; the 
body of the female ends in an egg-depositor, or sting, as 
the Ichneumon, Ant, Wasp, Bee, &c. 
The Suctorial Insects (Haustellata, Cases 5 to 10) 
have only a trunk or proboscis. 
The Lepidopterous bisects (Cases 5 to 9) have their 
wings for the most part covered with series of minute 
scales, which are very finely and microscopically striated, 
and reflect most beautiful colours. Some, as the Butterflies, 
(P apilionidce ,) fly by day, and have club-shaped antennae. 
(Cases 5, 6.) Others, having prismatic antennae, generally 
fly just before sunset, as the Sphinges or Hawkmoths. 
(Case 8.) Those which chiefly fly in the evening, and have 
pectinate, or filiform antennae, as the Moths, are in Cases 
8 and 9. 
The Dipterous Insects , (Case 10,) which have only 
two transparent wings with radiating ribs, the under 
pair of wings being replaced with halteres, or balancers 
as the Crane-fly, Bluebottle, &c. 
The Hemipterous insects, so called because in some the 
lower half of the upper wing is like parchment or leather, 
and the other half membranaceous, like the low r er pair, are 
in the 11th Case, as the Shield-bugs, Fire-flies ( Fulgora ), 
& c. 
The Apterous, or Wingless Insects, generally have 
four or five pairs of legs, and sometimes many more. They 
are always destitute of wings ; and the chief alteration 
that takes place in their approach towards maturity, is, 
that they gain additional legs; this change sometimes takes 
place at a very early age, which has caused some natu- 
