1900. } GROTE—THE DESCENT OF THE PIERIDS. ist 
liar in the absence of the fork to the second anal vein of the fore 
wings. They are thus comparatively specialized, although the ra- 
dius retains the five branchlets. —The common characters of the two 
groups with their five-branched radius and elongate wings apparently 
warrant a phylogenetic association, though in their special features 
sufficiently distinct. The species are, technically speaking, ‘‘ long 
wings,’’ forms in which the primaries have the branches of the 
radius removed outwardly, sometimes, as here, entirely beyond the 
cross-vein of the discal cell. The passage of the ordinary broad- 
winged type into that of the “‘ long wings ’’ I have recorded in the 
Nymphalids. Since I find no connection here of the two types of 
wing I have separated the Dismorphiadz from the Pierids, and ex- 
clude them when using in this paper the latter term. 
The single species and type of the Pseudopontiade may be 
called, in contradistinction perhaps to almost all other Lepidoptera, 
a ‘‘round wing.’’ In this place it is sufficient to state that the 
neuration is extraordinarily specialized. The radius is only three- 
branched and the median series shows the Pierid movement in 
specialization, the two upper branches both actually ascending the 
radius. But on the hind wings three anal veins have been pre- 
served, and the origin of this isolated type must be sought for at a 
period when this structure prevailed. It may have survived in this 
instance owing to the necessity for sustaining the spherical shape of 
the wings. We may now connect this form directly with Tine- 
ides which have the same three anal veins on tbe hind wings pres- 
ents) Consult figure, Proc. Aw. Prin. Soc, xxxvil, Pl. 1) Fie. 7. 
