Fig. 1.--Smerinthus geminatus.

Fig. 2.--Hepialis argenteomaculatus.

Fig. 3.--Attacus promethea.

In Figure 2 is represented one of the most generalized of living Lepidoptera; in Figure 1 is shown a form in which the wings are narrow, being fitted for rapid flight; and in Figure 3, one in which the wings are broad, being fitted for a different mode of flight.

Fig. 1.--Eudamus tityrus.

Fig. 2.--Papilio polyxenes.

Fig. 3.--Pieris protodice.

Fig. 1.--Halisidota tessellata.

Fig. 2.-- Thyris maculata.

Fig. 3.--Platephemera antiqua.

Fig. 4.-- Thyatira scripta.

Fig. 5.--Hexagenia bilineata.

Fig. 6.--Phryganidia californica.