Psyche 
[June 
1 68 
mostly once forked; 8-12 branches to Rs, unforked before terminal 
branchings at margin; free basal piece of MA longitudinal but not 
sinuate, not fusing with R but connected to base of Rs by a short 
cross vein; MP forking somewhat more distally than in fore wing, 
at about the level of first forking of Rs beyond cross vein to MA, 
without further branches before forks at margin; Cu forked very 
near wing base, neither CuA nor CuP with further forks until just 
before margin. Cross veins present only as an interrupted costal 
gradate series and two somewhat interrupted gradate series behind 
vena triplica. Wing membrane nearly clear, with a very faint irro- 
rated pattern, lacking the darker spottings of fore wing and without 
any trace of a circular dark mark distally behind the terminal 
anastomosis of the vena triplica. 
Discussion. The species of Propsychopsis possess a number of 
features which, by comparison to the Mesozoic fossils and to the 
magnificent living Megapsy chops illedgi (Froggatt) 11 of Australia, 
I judge to be somewhat generalized. These include the retention 
of all three raised vertex protuberances, the lack of any anastomoses 
between the branches of MP or between the posterior branch of 
MP and CuA in the fore wing ? the longitudinal orientation of the 
free basal piece of MA in the hind wing, and in the relatively 
broad hind wing. In this combination of features Propsychopsis is 
unique. 
Various living genera retain one or more of these generalized 
character states, and I would judge that Propsychopsis is only 
slightly more unspecialized than several of these living groups and 
is clearly more specialized than Megapsychops. Thus Silveira pos- 
sesses the full complement of three vertex tubercles and the two 
lateral tubercles are retained in Bcilmes , Cabralis, and Notopsychops. 
In the strictly Australian Magallanes and Psycliopsis, at most only 
a small vestige of these structures remains and in W ernzia they 
are totally absent. In the fore wing, some degree of fusion between 
the branches of MP or between MP and CuA occurs in all living 
genera of the family (including Megapsychops ) with the exception 
of B alines , Magallanes , and W ernzia, and in this last genus MP2 
and CuA usually touch at a point and in some specimens are actually 
fused for a short distance. With respect to the orientation of the 
basal piece of MA in the hind wing, only Notopsychops (and 
“The ensuing discussion is derived from an examination of species 
of all living genera with the exception of Megapsychops. My knowledge 
of this insect is based on the account of Tillyard (1918a). 
