Genus Lycasna 
on the upper side. The female is paler than the male, which is 
unusual in this genus, and has a “washed-out” appearance. 
On the under side the markings are very like those found in 
L. scudderi. Expanse, 1.15 inch. 
Early Stages. — Entirely unknown. 
The types which I possess came from Utah. 
(29) Lycsena pseudargiolus, Boisduval and Leconte, Plate 
XXXI, Fig. 6, $ ; Fig. 7, ? ; Plate XXX, Fig. 32, $ , under side; 
Plate V, Figs. 36, 43, 44, chrysalis (The Common Blue). 
Butterfly.— This common but most interesting insect has been 
made the subject of most exhaustive and elaborate study by Mr. 
W. H. Edwards, and the result has been to show that it is highly 
subject to variation. It illustrates the phenomena of polymor¬ 
phism most beautifully. The foregoing references to the plate 
cite the figures of the typical summer form. In addition to this 
form the following forms have received names : 
(a) Winter form lucia, Kirby, Plate XXXI, Fig. 1, $ ; Plate 
XXX, Fig. 20, $ , under side. This appears in New England 
in the early spring from overwintering chrysalids, and is charac¬ 
terized by the brown patch on the middle of the hind wing on 
the under side. 
(b) Winter form marginata, Edwards, Plate XXXI, Fig. 2, 
$ ; Fig. 3, $ ; Plate XXX, Fig. 19, $, under side. This ap¬ 
pears at the same time as the preceding form. The 
specimens figured in the plate were taken in Man¬ 
itoba. This form is characterized by the dark 
margins of the wings on the under side. 
(c) Winter form violacea, Edwards, Plate 
XXXI, Fig. 5, $ . This is the common winter 
form. The spots below are distinct, but never 
fused or melted together, as in the two preceding 
forms. 
(d) Form nigra, Edwards, Plate XXXI, Fig. 4, 
$. The wings on the under side are as in viola¬ 
cea, but are black above. It is found in West Vir¬ 
ginia and occurs also in Colorado. 
(e) Summer form neglecta, Edwards, Plate XXXI, Fig. 8, $ ; 
Fig. 9, $. This is smaller than the typical form pseudargiolus , 
also has the dark spots on the under side of the wings more dis¬ 
tinct, and the hind wings, especially in the female, paler. 
267 
Fig. 1 36.— 
Neuration of Ly- 
ccena pseudargi¬ 
olus , enlarged. 
Typical of sub¬ 
genus Cyaniris, 
Dalman. 
