Explanation of Fig. I.

a The head.

b b The eyes.

c c The palpi.

d d The antennæ.

e e The shoulders. The patagia, or tippets, are placed here.

f The thorax. The part underneath and opposite to this is termed the breast.

g The abdomen, with the annuli or rings of which this part is composed; very conspicuous in such of the Lepidoptera as are figured in Plate [27], [28], and [29].

A A The anterior wings.

B B The posterior wings.