95 
in the uniformity of colour of the body and tail above ; in having the 
fore margin of the wings convex; in their greater width from point 
to point ; in the tail being simple, or without any trace of fin, raised 
line, or keel, above; and lastly, in the absence of any kind of tentacle 
behind the spiracles. In the second and last of these characters it 
approaches much more nearly the American Pt. maclura, Mill. und 
Henle, but differs in smoothness when adult, in colour, greater width 
of body, and in the tail being sharp-edged or fin-carinate beneath. 
From the Indian Pt. micrura, Mill. und Henle, it is abundantly di- 
stinct. 
