Genus Lycaena 



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) Lycaena 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, 



5 ; Fig. 3, $ ; Plate XXX, Fig. 19, S, 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, S . This is the common winter 



form. The spots below are distinct, but never 



fused or melted together, as in the two preceding 



r Fig. 1 36. — 



Torms. Neuration of Ly- 



(d) Form nigra, Edwards, Plate XXXI, Fig. 4, ccena pseudargi- 



6 . The wings on the under side are as in viola- Typical ^/"fub- 

 cea, but are black above. It is found in West Vir- genus Cyanins, 



, . . ,-. , , Dalman. 



ginia and occurs also in Colorado. 



(e) Summer form neglecta, Edwards, Plate XXXI, Fig. 8, $ ; 

 Fig. 9, 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 



