202 Psyche [October 
is also largely suffused with same color; the type specimen has 
a slightly dentate margin on primaries, not nearly so marked as 
in avillaris; the remaining specimens are almost smooth. ‘The 
localities would point to the fact that this is a well-marked north- 
ern race, probably occuring in only one generation, our Nepigon 
specimens being taken July 8-15. The race has not the slightest 
resemblance with azillaris. 
An examination of Strecker’s type of senta has shown us that 
it is identical with the species hitherto known as brucei French. 
Rothschild & Jordan are in error in giving this name to the form 
with yellow centre to anal tuft dorsally. Strecker in his descrip- 
tion distinctly states “anal tuft black,” and the type agrees with 
the statement. In the Streck. collection this form with yellow 
centre is placed under brucei Fr. but this is evidently wrong, for 
the original description of this latter species states “terminal 
joint with its tufts, both lateral and central, jet black.” As the 
type of brucei has been destroyed by Dermestes, the description 
is all that remains to us for purposes of identification; in Coll. 
Barnes, however, are several specimens labelled bruce and taken 
by Bruce himself in the same locality as the type specimen; 
these agree with senta, so we consider our reference fairly cer- 
tain. As senta Stkr., having priority, must be retained in place 
of brucei Fr., we propose the name ariadne for the above form 
and append following description. 
H. diffinis ariadne n. nov. 
Palpi black above, pale yellow beneath; front, sides of thorax and patagia 
lemon yellow; centre of thorax darker, shaded with olive brown, which color 
extends over dorsal portion of abdomen to anal tuft; the black banding of 4th 
and 5th abdominal segments, characteristic of tenuis, not present; only in worn 
specimens does it seem to occur. Abdominal segments 1-5 broadly bordered 
laterally with black with traces of a few white scales intermixed; segments 6 and 
7 somewhat lighter dorsally than preceding with pale yellow lateral tufts, extend- 
ing sometimes to 5; anal tuft centrally orange yellow, laterally black; beneath 
black. Pectus yellow, legs black, with yellow tufts on tibiee; abdomen beneath 
black with very slight sprinkling of yellow hairs on posterior segments, differing 
markedly in this respect from senta, in which the abdomen is grayish yellow be- 
neath. Primaries hyaline with narrow brown-black terminal border, broadest 
at apex; the border is more or less suffused with rusty-red and contains a distinet 
apical spot of same color; base of wings deep red-brown with scattered yellow 
hairs; costal border slightly reddish with a few yellow scales. Secondaries, 
with very narrow border, distinctly reddish; anal patch reddish, intermixed with 
