168 Psyche [August 
Wood engravings are given of all these, together with a brief 
description of each form. Later writers have considerably cut down 
this list. Dyar (Cat. N. Amer. Lepid., 1902) lists but three forms 
as valid, these being californie Walker, decia Boisd. and dimidiata 
Stretch, the last two being placed as varieties. Holland, in his 
Moth Book (p. 121, 1903) places lena, decia and dimidiata as forms 
of california. Thus, according to Dyar’s list, we find again the 
three forms originally listed by Stretch, viz.: californie Walker 
(lena Boisd.), decia Boisd. and dimidiata Stretch. 
The principal variation in the coloration of Leptarctia california 
is in the secondaries, and the amount of black on the same wings 
is also very variable, from a few black points to uniformity. The 
variation even extends to the shape of the wings, the primaries 
being by no means constant. But it is the color variations that have 
brought L. californie to grief. The numerous varieties described 
were but individual variations of a single species as I can find all of 
the forms now recognized, with all intergradations, and in addition 
some which would certainly be worthy of being described as new 
if we were to go by some former standards, in this series of thirty- 
eight specimens, all from the same female. There is no doubt that 
we have but a single species of the genus Leptarctia, and the 
synonomy must stand as follows: 
Leptarctia californiae Walker. 
. lena Boisd. 1868-69. 
. adnata Boisd. 1868-69. 
. dimidiata Stretch. 1872. 
. stretchii Butler. 1881. 
boisduvalii Butler. 1881. 
. latifascia Butler. 1881. 
fulvofascia Butler. 1881. 
. albifascia French. 1889. 
. occidentalis French. 1889. 
. wrightii French. 1889. 
ail gil allel allel allallalls 
Stretch’s remarks as to how necessary it is to have a long series of 
specimens before it is possible to determine the limits of a species, 
are particularly applicable to the protean members of the family 
Arctiide, of which the present species is a member, and the test of 
breeding will also be found to be an essential in such forms. Lep- 
tarctia californie is a rather common and wide-spread, though 
