(_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 distinct, and the hind wings, especially in the female, paler. [Illustration FIG. 136.--Neuration of _Lycæna pseudargiolus_, enlarged. Typical of subgenus _Cyaniris_, Dalman.] (_f_) Southern form =piasus=, Plate XXXI, Fig. 10, ♂. This form, which is uniformly darker blue on the upper side than the others, is found in Arizona. There are still other forms which have been named and described. _Early Stages._--These have been traced through all stages with minutest care. The egg is delineated in this book on p. 4, Fig. 7. The caterpillar is slug-shaped, and feeds on the tender leaves and petals of a great variety of plants. The range of the species is immense. It extends from Alaska to Florida, and from Anticosti to Arizona. (30) =Lycæna amyntula=, Boisduval, Plate XXXII, Fig. 7, ♂; Fig. 8, ♀ (The Western Tailed Blue). _Butterfly._--Closely resembling _L. comyntas_, of which it may be only a slightly modified Western form. Until the test of breeding has been applied we cannot be sure of this. The figures in the plate give a very good representation of the upper side of the wings of this species. _Early Stages._--But little has been found out concerning these. It ranges from the eastern foot-hills of the Rocky Mountains to the Pacific in British America and the northern tier of Western States. (31) =Lycæna comyntas=, Godart, Plate XXXI, Fig. 29, ♂; Fig. 30, ♀; Plate XXXII, Fig. 12, ♂, _under side_; Plate V, Figs. 42, 47, 48, _chrysalis_ (The Eastern Tailed Blue). _Butterfly._--The blue of the upper side of the male in the plate is too dark; but the female and the under side of the wings are accurately delineated. The species is generally tailed, but specimens without tails occur. Expanse, 1.00-1.10 inch. _Early Stages._--These are well known and have been fully described. The caterpillar feeds on leguminous plants. This delicate little species ranges from the valley of the Saskatchewan to Costa Rica, and from the Atlantic to the foot-hills of the Western Cordilleras. It is common in the Middle and Western States, flitting about roadsides and weedy forest paths. [Illustration FIG. 137.--Neuration of _Lycæna comyntas_, enlarged. Typical of the subgenus _Everes_, Hübner.] (32) =Lycæna isola=, Reakirt, Plate XXX, Fig. 33, ♀, _under side_; Fig. 38, ♀ (Reakirt's Blue). _Butterfly._--The male on the upper side is pale lilac-blue, with the outer borders and the ends of the veins narrowly dusky. The female is brownish-gray on the upper side, with the wings at their base glossed with blue. In both sexes there is a rather conspicuous black spot on the margin of the hind wings between the first and second median nervules. The under side is accurately depicted in our plate, to which the student may refer. Expanse, 1.00 inch. _Early Stages._--Unknown.