1900.] GROTE—THE DESCENT OF THE PIERIDS. 31 
be a misprint for Zmnoria. As Ido not possess the means of fully 
checking this I thought I would be obliged to omit it at first, but I 
received the butterfly from Dr. Staudinger labeled ‘‘ Daptoneura 
limnortia.” According to Mr. Scudder, Daftoneura falls before 
Melete, with which it is synonymous. 
Wings entire; apices produced ; hind wings with anal angle 
roundedly produced ; veins transparent. Radius of primaries four- 
branched ; Ar and £2 in original position above cell, near to- 
gether; #3 out of R4-+ 5 a moderate furcation to apex. Cell 
closed ; 4/2 ascends radius for a brief extent, about one-fifth of 
distance from external margin to cross-vein ; A/2 nearly central ; 
two slight backward projections from cross-vein between (7/2 and 
radius. Hind wings with humeral spur straight truncated. 
This butterfly is more generalized than JZylothris, more special- 
ized than WVepheronia, which it appears to represent in the Ameri- 
can fauna. The smooth wings are saturated with a pale yellow, 
deepening over the secondaries, the outer margin of which latter is 
bordered by a shade resembling the chrome yellow colored patches 
at base of primaries in its allies. 
Two isolated genera, of differing grade of specialization, may be 
here considered. They have frail wings and in literature have been 
associated with Leptidia ( Leucophasia), although the neuration does 
not appear to me to warrant the inference. 
Gen. Leptosia Hiibner, 1816. 
Type: L. xiphia. 
Leptosia xiphia. 
Wings frail ; discal cells developed, broadening outwardly, about 
two-thirds of length of wing. Radius three-branched; #1 from 
above discal cell; 2 advanced to opposite cross-vein, hence 
assuming the 7Z7ifurcula position; #3 to 5 furcating with d/1 
which ascends radius for about one-third of distance from cross-vein 
to external margin. 4/2 from upper corner of discal cell, appar- 
ently not quite fusing with radius; cross-vein concave. Hind 
wings with humeral spur appearing curved outwardly at top. 
This genus is highly specialized, nearly on a par with Z/odina. 
It is not related at all to Leftidia, and has more resemblance to 
Neophasia. 
