AMERICAN LEPIDOPTERA. 345 



Resembles superficially Hydroecia Iroea, Gn. The body is propor- 

 tionally heavier and the head more sunken than in that genus, from 

 all the species of which it is readily distinguished by the presence 

 of the very distinct angulated median shade and the lower accessory 

 ordinary spots. In the shape of the wings it agrees Avith Hydroecia 

 lorea, but the color is different, being brighter and deeper, as in the 

 species of Gortyna above described. It appears to be the smallest 

 of the North American species of Gortyna yet discovered with 

 yellow or purple wings, the female being but little larger than small 

 males of G-. nitela or G. nebris, while proportionally much heavier 

 bodied. 



HYDROECIA, Guence. 

 Hydroecia sera, n. sp. (Plate 7, fig, 55, % .) 



% 9 • Very dark carneous brown. Antennae dark testaceous, with 

 basal whitish scale tufts. Legs, inwardly, and under thoracic surface 

 pale testaceous cinereous; tarsi subannulate; legs outwardly shaded 

 with carneous or purplish-brownish, as is the under surface of abdo- 

 men. Sides of the % abdomen with longer and brighter purplish 

 scales. Abdomen, above, blackish cinereous, tufted on the dorsum ba- 

 sally. Hind tibiae with two pairs of pale unequal spurs. 



Anterior wings dark carneous or purplish brown. Transverse lines 

 geminate. A geminate basal half-line, the outer of its two component 

 lines obsolete, the space between the lines is pale. Transverse ante- 

 rior line geminate, its inner line obsolete, the space included by the 

 lines paler than the ground color of the wing. The transverse ante- 

 rior line is sharply dentate on costa, below median nervure twice arcu- 

 ate to internal margin. A large orbicular spot with paler shaded cen- 

 tre, narrowly annulate with white and black scales. Median shade 

 very diffuse. Reniform spot large, much constricted, annulate nar- 

 rowly by black and white scales, spreading inferiorly over the median 

 nervure and the nervules at base, where it is blackish, being superiorly 

 concolorous with the orbicular. Transverse posterior line slightly ar- 

 cuate superiorly, but straighter than usual, very regularly interspaceally 

 lunulate ; it is geminate, the outer line but faintly visible. Subter- 

 minal space paler than the rest of the wing. All the veins terminally 

 are neatly marked with black and white scales, like the annuli of the 

 ordinary spots. Subterminal line pale, irregular, preceded by a dark 

 diflfuse shade band ; terminal space dark, paler at apices, A paler 

 narrow even terminal line. Fringes dark, interspaceally excavate. 

 Three minute, ante-apical, pale dots on costa. Secondaries blackish 

 cinereous, becoming paler towards the base; a narrow dark terminal 



TRANS. AMER. ENT. SOC. (44) JANUARY, 1868. 



