| | 33. _Euchloë pima_, Edwards, ♂. | | 34. _Euchloë sara_, Boisduval, var. _julia_, | | Edwards, ♂. | | 35. _Euchloë sara_, Boisduval, var. _stella_, | | Edwards, ♂. | | 36. _Euchloë sara_, Boisduval, var. _stella_, | | Edwards, ♀. | | 37. _Euchloë genutia_, Fabricius, ♂. | | 38. _Euchloë genutia_, Fabricius, ♀. | | 39. _Euchloë olympia_, Edwards, var. _rosa_, | | Edwards, ♂, _under side_. | | | | [Illustration PLATE XXXII.] | +--------------------------------------------------------------+ _Butterfly._--The male closely resembles the male of _L. melissa_ 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) =Lycæna 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 polymorphism 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 characterized 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 appears at the same time as the preceding form. The specimens figured in the plate were taken in Manitoba. 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 _violacea_, but are black above. It is found in West Virginia and occurs also in Colorado.