82 
Psyche 
[March 
Fig. 1 . Moravia convergens, subimaginal fore wing with highly convex anterior 
margin and narrowed wing tip. Lower Permian of Czechoslovakia. Original. P — 
anal brace. 
Fig. 2. Carrizopteryx arroyo, n. sp., adult hind wing. Late Upper Carboniferous of 
New Mexico. Holotype. PC — postcostal vein; P — anal brance. 
in many other nymphs with basally broad wings, the nymphal bend 
is limited to the distal half of the wings (fig. 3; Wootton, 1972, see 
figs. 1 and 2). During ontogeny, the bend is progressively shifted 
more distally in the older nymphal instars and in the subimagos 
(figs. 4A and B), until it is absent in the adult moult (fig. 4C). Thus, 
the angle of attachment to the body, as well as the outline of the 
anterior and posterior margin of the wings, changes successively 
and fluently, as indicated. 
