EXPLANATION OF PLATE XXX

1. Thecla dumetorum, Boisduval, 3. 2. Thecla dumetorum, Boisduval, e, under side.

27. Lycana marina, Reakirt, 7, under side.

28. Lycana dædalus, Behr, &, under side.

3. Thecla affinis, Edwards, 9, under 20. Lycæna icanoides, Boisduval, 3,

17. Thecla ciyphon, Boisduval, 5, under 42. Lreana pheres, Boisduval, &, under

18. Thecla martialis, 7, under side. 43. Treana xerxes, Boisduval, Z, under 10. Lycæna pseudargiolus, Boisd. -Lec..

side.

Lrcæna sagiftigera, Felder, §, under side.

20. Lycæna pseudargiolus, Boisd. -Lec.. 45. Lycana ammon, Lucas, 7, under

var. marginata, Edwards, 2, un- 44.
der side.

Butterfly.-Dark brown, glossed at the base of the wings and on the inner margin of the secondaries with blue. The under side is well delineated in the plate. Expanse, 1.00 inch.

Early Stages.-These await description.

Cecrops is common in the Southern States, and has been taken as far north as West Virginia, Kentucky, and southern Indiana.

(26) Thecla clytie, Edwards, Plate XXX, Fig. 6, ? (Clytie). Butterfly.-Blue above, with the apical two thirds of the fore wings black. The wings on the under side are white, with the usual marginal and transverse markings quite small and faint. Expanse, .90 inch.

Early Stages.- Unknown.

Habitat, Texas and Arizona.

(27) Thecla ines, Edwards, Plate XXIX, Fig. 35, 8 (Ines).

Butterfly.- Much like the preceding species, but smaller, with the secondaries marked with blackish on the costa. On the under side the wings are slaty-gray, with numerous fine lines and a broad median dark shade on the hind wings, running from the costa to the middle of the wing. Expanse, .75 inch. Early Stages.- Unknown.

Ines is found in Arizona.

(28) Thecla behri, Edwards, Plate XXX, Fig. 4, 8; Fig. 5, 8, under side (Behr's Hair-streak).

Butterfly.-Both sides are well displayed in the plate, and therefore need no particular description. Expanse, 1.10 inch. Early Stages. - Unknown.

This species is found in northern California and Oregon, and eastward to Colorado.

(29) Thecla augustus, Kirby, Plate XXX, Fig. 15, (The Brown Elfin).

Butterfly.-Brown on the upper side; paler on the under side. The fore wings are marked by a straight incomplete median band, and the hind wings by an irregularly curved median band or line. Back of these lines toward the base both wings are darker brown. Expanse, .90 inch.

Early Stages.-These are not well known. Henry Edwards describes the caterpillar as "carmine-red, covered with very short hair, each segment involute above, with deep double foveæ." The chrysalis is described by the same observer as being "pitchy

brown, covered with very short bristly hair, the wing-cases paler." The food-plant is unknown.

This species is boreal in its haunts, and is found in New England and northward and westward into the British possessions. (30) Thecla irus, Godart, Plate XXX, Fig. 12, 8; Plate V, Figs. 32-34, chrysalis (The Hoary Elfin).

Butterfly.-Grayish-brown on the upper side. The wings on the under side are of the same color, paler on the outer margins, and darker toward the base. The species is subject to considerable variation. The variety arsace, Boisduval, has the hind wings marked with reddish near the anal angle, and the outer margin. below marked with hoary-purple. The usual small crescentic spots appear on the outer margin of the hind wings, or they may be absent. Expanse, 1.10 inch.

Early Stages. -An epitome of all that is known is to be found in "The Butterflies of New England." The caterpillar feeds on young plums just after the leaves of the blossom have dropped

away.

The species is rather rare, but has been found from the Atlantic to the Pacific in the latitude of New England.

(31) Thecla henrici, Grote and Robinson, Plate XXX, Fig. 21, (Henry's Hair-streak).

Butterfly.-Much like the preceding species on the upper side, but with the outer half of the wings broadly reddish-brown. The secondaries on the under side are broadly blackish-brown on the basal half, with the outer margin paler. The division between the dark and light shades is irregular and very sharply defined, often indicated by a more or less perfect irregularly curved median white line. Expanse, 1.00-1.10 inch.

Early Stages.-These have been described by Edwards in the "American Naturalist," vol. xvi, p. 123. The habits of the larva are identical with those of the preceding species.

It occurs from Maine to West Virginia, but is rare.

(32) Thecla eryphon, Boisduval, Plate XXX, Fig. 17, 9, under side (Eryphon).

Butterfly.-Closely resembling the following species both on the upper and under side of the wings, but easily distinguished by the fact that, on the under side of the fore wings, the inner of the two dark bands on the outer third of the wing is not sharply angulated below the third median nervule, as in T. niphon, but is