eas PROCEEDINGS OF THE NATIONAL MUSEUM. 79 
in it by Messrs. Grote and Morrison, the species recently described by 
myself, and Mamestra mucens, bisulea, and confusa, 
Three distinct series are recognizable, based on the antennal strue- 
ture of the male. 
The first, with pectinated antenne, contains mucens, rileyt and bisulea. 
In all of them veins 3 and 4 are both pale marked to the margin, least: 
distinct in bisulea. 
Mucens has the median lines all strongiy dentate, the t. p. line becom- 
ing white and distinct through the submedian interspace, where it is 
usually preceded by a black or blackish spot. It varies from an even 
dull fuscous brown, very like confusa, to a much paler, dirty luteous 
ground color, rarely washed with fuscous brown, the s. t. space obvi- 
ously washed with bluish white, extending both to the apex and the 
anal angle. The black shade before the t. p. line in submedian space 
becomes much more contrasting in paler specimens. 
Rileyt is a smaller species than the preceding, with the maculation 
much more confused and indefinite. There isa longitudinal black shade 
through the center of the wing, which obscures all the normal lines. 
In bisulea the median lines are marked only on the costa, the reni- 
form is somewhat contrastingly white marked, the claviform prominent. 
The pale rays are obvious on veins 3 and 4; but hardly as well marked 
as in the other species. The outer margin is more oblique, the hind 
angle less retreating. 
The second series, with serrated and bristled antennz contains vomer- 
ina with its variety evicta and (probably) injfidelis, which are also dis- 
tinguished by having vein 3 only pale marked. 
In vomerina and evicta, which Mr. Grote correctly refers as varieties 
of the same species, the ordinary spots are large and fused, discolorous. 
Vomerina has the costal region gray, contrasting strongly with the 
blackish shade obtaining below the median vein. 
Evicta has exactly the same maculation, but it is a more even bluish 
gray with a more or less obvious reddish brown and even ferruginous 
suffusion, the terminal space darker fuscous. 
Infidelis is compared by Mr. Grote to vomerina, but the ordinary spots 
are not fused, and, inferentially, there is no such contrast between 
costal and submedian region, though it is said that a rich red brown 
shade extends outwardly, sutfusing the wing. 
The two remaining species have the antenne of the male simple, 
merely ciliated, and veins 3 and 4 are both pale marked. 
Peracuta is arusty reddish gray form with whitish gray streaking, 
indenting veins 7 and 8, as well as 3 and 4. The ordinary spots are 
small, fused, flask-shaped, incompletely white ringed and with a rusty 
reddish shade through the center. 
Confusa is dull fuscous brown, ali the markings obscure. The ordi- 
nary spots are large, often confluent, sometimes scarcely traceable. 
The t. p. line is more or less white marked, and usually obvious through 
| the submedian interspace. 
