176 LEPIDOPTERA HETEROCERA 
DC incurved, C anastomosing at a point with cell, then rapidly diverging, SC? stalked, M! connate or 
short-stalked. 
Ecc. — Elliptical, disk-like, flattened concave above and below with sharp edges, one end a little 
more rounded-pointed than the other, narrower; smooth and shining, with small, narrow and obscure 
reticulations (Dyar, Psyche, Vol. 9, p. 287). 
Lamva. — Slender, cylindrical, head strongly bilobed, the lobes produced into erect conical 
horns. prothorax produced anteriorly into similar but smaller cones, skin-surface finely granulated, 
tubercles and setze very small in first instar, becoming obsolete, anal plate pointed, anal legs extended 
laterally with large plates (Dyar, loc. cit., complete description of viridipennata in its five stages). 
PuPa. — Apparently undescribed ; enclosed in a cocoon of a few strands of silk between leaves 
(Dyar, loc. cit.). 
A very distinct genus, though probably related to CAlorissa, especially its American representatives. 
Type of the genus : Mesolhea inceríata (Walker) — Nemoria incertata, Walker (1901). 
Geographical distribution of species. — Noearctic. 
1. M. incertata (Walker). Eastern N. America. 
Nemoria incertata, Walker, List Lep. Ins. Brit. Mus. Vol. 26, p. 1557 (1862). 
N'emoria oporaria, Zeller, Verh. Zool.-bot. Ges. Wien, Vol. 22. p. 481 (1872). 
Nemoria gratata (Walker, MS.) Packard, Mon. Geom. U. S. ^. p. 373, t. 10, 
f. 79 (1876). 
CAlorochroma gratata, Gumppenberg. Nova Acta Acad. Leop. d. Naturf. 
Halle, Vol. 64, p. 494 (1895). 
Chlorochroma incertata, Gumppenberg., ibidem, p. 495 (1895). 
Eucrostis incertata, Hulst, Trans. Amer. Ent. Soc. Vol. 23, p. 313 (1896). 
Mesothea incertata, Warren, Novit. Zool. Vol. 8, p. 446 ' 1901). 
2. M. viridipennata ( Hulst). Western N. America. 
Eucrostis viridipennata, Hulst, ''rans. Amer. Ent. Soc. Vol. 23, p.313 (1896). 
126. GeNus CHLOROCHLAMYS, HurLsT 
Chlorochlamys. Iulst, Trans. Amer. Ent. Soc. Vol. 233, p. 312 (1896). 
Characters. — Face smooth. Palpus rather long, at least in Q, second joint moderately rough- 
scaled, third joint smooth, in cf quite moderate, in Q long. Tongue present. Antenna moderate, in c 
bipectinate with long branches, apical part merely serrate; in Q nearly simple. Pectus somewhat 
hairy. Femora glabrous. Hindtibia in cf dilated with hair-pencil, median spurs wanting. in Q with all 
spurs. Hindtarsus in &' short. Abdomen not crested. Frenulum im c very slender, arising from before 
basal expansion; in Q rudimentary. Forewing with costa somewhat arched, apex moderate, termen 
smooth, oblique, gently curved, cell not quite one-half, DC incutrved, SC! from cell, usually anastomosing 
with C, SC? normal, R! connate or short-stalked, M! connate or short-stalked; hindwing with termen 
rounded or very weakly excised between R! and R?, cell rather less than one-half, DC incurved, 
C anastomosing at a point near base, rather rapidly diverging, SC? stalked, M! stalked. 
Langva. — Head small, subquadrate, deeply bifid, prothorax with two small anterior dorsal 
projections, body thickest behind, much attenuated anteriorly. Feeds on various flowers (Goodell, 
The Canad. Entom. Vol. 12, p. 235; Hulst, Bull. Brooklyn Ent. Soc. Vol. 2, p. 78). 
