_Chrysalis._--Ventrally straight, dorsally convex, strongly produced in a rounded, somewhat keeled eminence over the thorax; pointed at the end. Generally green or light drab in color, with dark markings on the sides of the wing-cases. This genus is distributed throughout the temperate regions both of the Old and the New World, and includes in our fauna a number of forms, the most of which are peculiar to the Pacific coast. (1) =Coenonympha california=, Doubleday and Hewitson, Plate XXV, Fig. 14, ♀; form =galactinus=, Boisduval, Plate XXV, Fig. 9, ♂; form =eryngii=, Henry Edwards, Plate XXV, Fig. 10, ♂ (The California Ringlet). _Butterfly._--This little species is to be distinguished from its near allies by its white color. The form _galactinus_ is the winter form; the form _california_ the summer form. The former is characterized by the darker color of the hind wings on the under side and the more prominent development of the marginal ocelli. The form _eryngii_ is simply a yellower form, with less dark shading on the under side. _Early Stages._--These have been most carefully and beautifully worked out by Edwards, and the reader, for a full knowledge of them, may consult the splendid plate in "The Butterflies of North America," vol. iii. The species ranges from Vancouver's Island southward on the Pacific coast and eastward into Nevada. (2) =Coenonympha elko=, Edwards, Plate XXV, Fig. 25, ♀, _under side_; Fig. 26, ♂ (The Elko Ringlet). _Butterfly._--Yellow on both sides of the wings, the lower side paler than the upper, and the basal area lightly clouded with fuscous. _Early Stages._--Undescribed. This species is found in Nevada and Washington. (3) =Coenonympha inornata=, Edwards, Plate XXV, Fig. 13, ♂, _under side_; Fig. 29, ♂ (The Plain Ringlet). _Butterfly._--The wings on the upper side are ochreous-brown, lighter on the disk. The costal margin of the fore wings and the outer margin of both fore and hind wings are gray. The ocellus at the apex of the fore wings on the under side is faintly visible on the upper side. On the under side the fore wings are colored as on the upper side as far as the termination of the discal area, which is marked by a narrow transverse band of pale yellow, followed by a conspicuous ocellus. The hind wings are gray, darkest toward the base, behind the irregular whitish transverse band which crosses the outer portion of the disk. _Early Stages._--Unknown. The species occurs in Montana, Minnesota, British America, and Newfoundland. Newfoundland specimens, of which I possess a large series, are distinctly darker in color than those taken in the Northwest. Some recent writers are inclined to regard this as a variety of the European _C. typhon_. I am persuaded that they are mistaken. (4) =Coenonympha ochracea=, Edwards, Plate XXV, Fig. 11, ♂; Fig. 12, ♂, _under side_ (The Ochre Ringlet).