{June 1884. BULLETIN BROOKLYN ENTOM. SOC. VOL. VII. 19 
in some species, but I have not found the variation sufficiently marked to 
be of value in the determination of species or even of larger groups. 
The wags are in ornamentation and coloration extraordinarily vari— 
able in the same species. In fact, in some species, there is nothing at 
all of these things which is not subject to wide variation. On the fore 
wings the grounc. color,—the color and limitations of the reniform and 
subreniform spots,—the transverse lines,—the subterminal line,—the 
basal and apical dashes, the shadings of the costal and inner margins 
and of the t.p. line and the reniform spot,—the shading of the basal 
middle and outer spaces, are inconstant. On the hind wings, the bands 
present great differences in width, outline, and color. In short, every 
thing seems to be inconstant in some species, and those that have very 
little variation, are few, and of these, the examples collected are few. 
In venation the wings differ somewhat from that of the typical MVoc— 
turd. On the fore wings, the 5th venule is slightly more advanced to- 
wards the middle of the discal cell, showing again an affinity with the 
Geometride. The discal cell is very short, being less than one-half the 
length of the wing. On the hind wings, the venation is after the Noctuid 
type, save that the cell is remarkably shortened, being not more than 
one-third the length of the wing. ‘The venation of both wings is given 
in figs. 17 and 18 of plate I. 
There are, however, as relating to venation, some things which 
ought to have more than a passing interest to the student of systematic 
entomology. Upon the fore wings, we find extending inward from the 
outer margin between the 5th and 6th, and 6th and 7th venules, rudi- 
mentary venules, which however do not reach the outer margin of the cell, 
There is also a rudimentary vein reaching out from the base, dividing 
longitudinally the discal cell, and extending beyond it, to meet the one 
extending in from the outer margin of the wing. On the hind wing, the 
cell, which has generally, if not always been considered open outwardly, 
is really closed, though the cross vein is faint, and somewhat rudimen- 
tary. ‘There is on this wing also, found a rudimentary vein, dividing the 
cell longitudinal.y, and extending towards, if not reaching the outer 
margin. With regard to the presence of all these, I have no guesses to 
make ofa possille past or a possible future. But the presence of these 
rudimentary veirs calls to our minds the venation on the one hand of 
certain of the Bombycide, and on the other of certain of the Zorricide, 
and suggests affinities which are somewhat surprising. 
