The variety =citima=, Henry Edwards, differs in being without the orange spots and having the ground-color of the under side ashen-gray. Specimens connecting the typical with the varietal form are in my possession. _Early Stages._--Unknown. Found in southern Colorado, Utah, Arizona, and southern California. (3) =Thecla halesus=, Cramer, Plate XXIX, Fig. 9, ♂ (The Great Purple Hair-streak). _Butterfly._--The hind wings have a long tail, and are lobed at the anal angle. The wings are fuscous, iridescent bluish-green at the base. The body is bluish-green above. On the under side the thorax is black, spotted with white, the abdomen bright orange-red. The wings on the under side are evenly warm sepia, spotted with crimson at their bases, glossed with a ray of metallic green on the fore wings in the male sex, and in both sexes splendidly adorned at the anal angle by series of metallic-green and iridescent blue and red spots. Expanse, 1.35-1.50 inch. _Early Stages._--All we know of them is derived from the drawings of Abbot, published by Boisduval and Leconte, and this is but little. The caterpillar is said by Abbot to feed on various oaks. It is very common in Central America and Mexico; is not scarce in the hot parts of the Gulf States; and is even reported as having been captured in southern Illinois. It also occurs in Arizona and southern California. (4) =Thecla m-album=, Boisduval and Leconte, Plate XXIX, Fig. 10, ♂ (The White-M Hair-streak). _Butterfly._--Smaller than the preceding species; on the upper side somewhat like it; but the iridescent color at the base of the wings is blue, and not so green as in _halesus_. On the under side the wings are quite differently marked. The fore wing is crossed by a submarginal and a median line of white, shaded with brown, the median line most distinct. This line is continued upon the hind wings, and near the anal angle is zigzagged, so as to present the appearance of an inverted M. Near the outer angle of the M-spot is a rounded crimson patch. The anal angle is deep black, glossed with iridescent blue. Expanse, 1.35-1.45 inch. _Early Stages._--All we know of this pretty species is based upon the account and drawings of Abbot made in the last century. We need better information. According to Abbot, the caterpillar feeds on _astragalus_ and different oaks. This species has been taken as far north as Jersey City and Wisconsin, and ranges southward as far as Venezuela. Its citadel is found in the live-oak hummocks of the Gulf States and the oak forests on the highlands of Mexico and more southern countries. (5) =Thecla martialis=, Herrich-Schäffer, Plate XXX, Fig. 18, ♀, _under side_ (The Martial Hair-streak).