186B.] 
59 
space at the top, and in the more pinkish shade of the ante¬ 
rior wings, characters, which appear to he specific and con¬ 
stant. 
THYATYRA Ochs. 
pudens Ctuenee, Noct. 1, p. 13, pi. 3, fig. 1. Walker, C. B. M. ISToct. I, ]). 8. 
New York State (G-nenee). 
Descriptions of two new species of AIICTIID.2E. 
BY WILLIAM SAUNDERS, 
of London, Canada West. 
Arctia celia, nov. sp. 
Male. Palpi black above, yellowish beneath. Head yellow with 
black lateral stripes. Antennae brown, pectinated. Thorax yellowish- 
white, deeper in color towards the head, with two short black stripes 
in front, and three longer and larger on disk, one central and one on 
each tegula. 
Primaries very dark brown with white stripes; costa edged with yel¬ 
lowish to about the apical third of the wing. A wide stripe having 
its origin at the base of the median vein and from thence defiected 
towards the posterior angle where it grows narrowly linear; from this 
two branches proceed, the first about the centre of the wing extends 
in a straight line to the costa; the second obliquely towards the apex, 
terminating under the costal edge; a subterminal zigzag line forming 
a distinct W crossed at the top by the oblique band. 
Secondaries lightish brown, with two irregular yellow spots about the 
middle of the wing, and a stripe of the same color extending from the 
base along the submedian vein to within a third of the hind margin; 
inner margin yellow. Under surface of wings lighter in color with 
the same markings. Cilia brown intermixed with white. Wings ex¬ 
pand 14 lines. 
