110 ENTOMOLOGICAL SOCIETY 
placed a little nearer the tip, and with the outer margin as sharp and 
distinct as the inner edge, the inner side of the mark in both wings is 
slightly concave; the general color of the wing is more of a deep brown 
than a black, and is rather shining. The species is also smaller than 
P. similis. The genitalia show differences as figured. 
Expanse, cT, 38 mm., $ , 44 mm. 
One pair from Gifu, Japan. 
This is probably the species figured by Dr. Ulmer as the male 
of P. paradoxa, which was described from a female. However, 
McLachlan says that fork 4 is present in forewings and so 
figures it, while in this and P. similis fork 4 is absent in both 
sexes. Dr. Ulmer says nothing about this matter. Moreover 
the anastomosis of P. paradoxa, as figured, is very much more 
irregular than in either of my species. Therefore, I believe that 
P. paradoxa is unknown to Dr. Ulmer and myself, and that 
there are at least three species of Perissoneura in Japan, if 
indeed my two species do not form another genus on account 
of the absence of fork 4. 
Odontocerum japonicum n. sp. 
Black; wings brown, anterior pair rather darker than hind pair, and 
darkest in the apical third; legs brown, tibiae and tarsi paler. Differs 
at once from the European O. albicorne in that the discal cell of fore wings 
is extremely long, fully five times as long as its pedicel, the first apical 
cell not reaching back on the discal cell more than one-fifth its length; 
the fifth apical cell has a pedicel rather longer than in O. albicorne, and 
the third apical cell is also acute at base, and short pedicellate. The 
antennae are barely dentate. 
Expanse 34 mm. 
Two specimens from Gifu, Japan. 
Molanna mopsta n. sp. 
Brown; wings dusky, with some black, and more yellowish appressed 
hair, blackish on apical margin, and extending somewhat up on the 
veins; hind wings paler, the costal area rather yellowish, fringe of anal 
region very long, gray, especially long on the basal lobe; legs yellowish, 
with yellowish spurs, and some fine black spines on underside of the 
tibiae and tarsi. In fore wings the median vein beyond the anastomosis 
has three branches; the first apical cell is swollen above near tip. Vena- 
tion of hind wing of male as figured. 
Expanse 27 mm. 
One male from Gifu, Japan. 
A black-winged female Molanna, also from Gifu, probably 
represents another species, as it is smaller. 
