286 
Psyche 
[June-September 
Genus Moravia Kukalova 
Moravia Kukalova, 1964: 162; Kukalova-Peck & Peck, 1976:83. 
This genus is characterized by the presence of an arched cuticular 
strut, formed by the alignment of the basal parts of R1 and CUA, 
connected by a strong cross vein. It has previously been known only 
by the type-species, convergens, from the Lower Permian of Obora, 
Czechoslovakia. 
Moravia grandis, n.sp. 
Figures 16 and 17A 
Hind wing: maximum length of preserved portion, 72 mm; maxi¬ 
mum width, 48 mm; estimated length of complete wing, based on 
M. convergens, 90 mm. The basic pattern of the main veins, so far as 
preserved, is very similar to that of convergens (figure 17B). CUA, 
CUP, and 1A are not so strongly curved as in convergens and the 
spaces between the main veins are filled with several rows of cells 
forming the archedictyon in the distal portion or by fine, irregular 
crossveins in the basal portion. This is a very distinct species and 
may eventually require a separate genus. However, until the distal 
part of the wing is known, it seems preferable to assign the species to 
the genus Moravia. 
Holotype: no. MCZ 8647ab, collected at locality 1, lower layer, in 
the Midco beds, Noble County, Oklahoma, by F. M. Carpenter in 
1940. This consists of the basal two-thirds or three-fourths of a hind 
wing, with all details very well preserved. The distal part of the wing 
appears to have been torn away before preservation. This species is 
by far the largest known in the family Calvertiellidae, being appar¬ 
ently more than twice the size of convergens and more than three 
times the size of permiana or arroyo. 
Comparison of the Species of Palaeoptera in 
the Elmo and Midco Beds 
In my introduction to Part 1 of this series of papers (1947) I 
pointed out that the Elmo beds in Kansas and the Midco beds in 
Oklahoma originated as deposits formed by lakes about 140 miles 
apart. Both deposits are part of the Wellington Formation of the 
Leonardian Stage of the Permian and, in geological terms, were 
