PAP1LI0 III. 
% 
Egg similar to that of Walshii. Duration of this state 4 to 5 days. 
The larvae of Marcettus combine the variations of Walshii and Telamonides, 
about one half resembling those of the former, and most of the remainder being 
either green or blue-green, as before described, with blue, black and yellow bands 
on fourth and fifth segments. Duration of the larval state twelve to nineteen 
days. 
Chrysalis similar to that of Walshii, but varying much in size, the largest 
being .1 broader and .2 longer; thoracic process more prominent and hooked, and 
the reticulations and abbreviated bands more conspicuous. Color either brown or 
green. Duration of chrysalis state 11 to 14 days. 
I subjoin the diagnoses of these forms given by Mr. Felder in his Species 
Lepidopterorum, Vienna, 1864, pp. 15 and 59. 
Section 23. Sub-section E. — Marcelltjs. 
“ Wings much broader than in preceding sub-sections, (i. e. Sinon, &c.) hind wings deeply 
dentated, much more produced, costa convex, the lower disco- cellular nervule of fore wings less sinuous, 
the cell of hind wing broader, the lower disco-cellular nervule much longer.” 
Sub-section F. — Telamonides and Ajax (Abbotii and Walshii). 
“ Fore wings less produced apically, the cell shorter; costa of hind wings longer but anal region 
much less produced than in Marcettus ; the superior and inferior disco-cellular nervules of fore wings a 
little concave outward ; cell of hind wings much shorter, the inferior disco-cellular nervule shorter ; 
tail narrower, shorter; club slender; front very hairy.” 
Here therefore are three well defined forms, differing in many specific charac- 
ters and long recognised as distinct species. For eight years past I have had 
favorable opportunities for studying their habits, and have been intent on solving 
what very early struck me as a mystery. I am pleased at last at having met with 
sufficient success to warrant my giving the results thus far obtained in this volume. 
Mr. Wallace, (Natural Selections, pages 145-159,) has admirably described and 
illustrated the phenomena of dimorphism or polymorphism. This is occasioned by 
common parents producing two or more forms of offspring of distinct types, without 
intermixture or hybridism, and among the lepidoptera, as stated by this author, 
has usually been observed in the female sex only. We have many examples in our 
fauna, partly cases of albinism, as in Colias, of flavism, in Anthocaris, or of 
melanism, as in Lycsena, and notably in case of Papilio Turnus, one of our largest, 
most widely distributed and best known butterflies. The male of this is always 
yellow, but the females in the Middle and Southern States are dimorphic, one 
form being yellow like the male, the other black. (There are however occasional 
cases of true hybridism between dimorphic forms, and I have several examples 
of hybrid Turnus, one of which is perfect.) We have also a case of dimorphism 
in Grapta Interrogationis, that embraces both sexes. There is another phenomenon 
