Psyche 
[December 
158 
Diagnosis. Fore wing: long and slender, broadest before mid- 
wing; veins strong, wing membrane thin; anterior margin slightly 
concave near base, then almost straight; apex slightly directed 
posteriorly; posterior margin slightly concave at mid-wing; Sc termi- 
nating on R at about the end of the second third of the wing length; 
Ri long; Rs originating before the end of the first third of the wing 
length, forming three branches, the first forked ; an oblique cuticular 
thickening (ct) running from the very base of Rs to M + CuA; M 
close to R before, and branching slightly beyond, the level of the 
origin of Rs; MA simple; MP giving rise to two branches; Cu 
dividing before the origin of Rs, CuA fused with M for a short 
distance, then closely following MP; CuP simple, arched strongly 
backwardly; 6 anal veins arising perhaps from a common stem, 
recurved and slightly sigmoidal; cross veins not dense, mostly simple, 
forming little reticulation; intercalary sectors distinctly formed. 
Relationship: Calvertiella differs from Moraviptera (probably 
a hind wing) in having CuA more remote from MP, a three 
branched MP and more regular cross veins. From Moravia n.g., 
it differs in the more slender fore wing, with only three branched 
MP, the fusion of CuA with M for some distance, the absence of 
supporting cross veins near origin of R4+5, and in having far less 
dense cross venation and less reticulation. 
Type-species: Calvertiella permiana Tillyard. 
Calvertiella permiana Tillyard 
Text-figures 1 and 4A; plate 19 
Calvertiella permiana Tillyard, 1925, Amer. Journ. Sci., 10:43, figs. 1, 2A. 
Fore wing, 27.5 mm long, 7 mm broad; about 4 times longer 
than broad. Intercalary sectors well indicated, convex, irregular 
reticulation almost absent; first branch of Rs with a long fork, the 
third very short; anal area gradually broadening in the distally, the 
wing being broadest shortly before the middle. 
Tillyard was apparently not aware, when he prepared his account 
of this fossil, that some tearing and distortion of the wing had taken 
place in connection with its preservation in the fossil state. In the 
basal third of the wing, the costal and subcostal areas are broken 
and pushed posteriorly over the stems of R. At the same time, the 
anal area was broken and pushed anteriorly over the stem of Ai. 
Careful removal of small pieces of matrix shows that all of the main 
veins have independent stems. The drawing in text-figure 1 depicts 
these veins restored to their normal positions. Clearing away of 
