112 
Psyche 
[Vol. 87 
This family differs from others in the order by the remoteness of 
CUA from CUP, and by the presence of irregular cells formed by 
cross veins in several areas of the wing. The closest affinities of the 
family seem to be with the Permobiellidae. 
Amboneura, new genus 
Since only one species is known in the family, a precise generic 
diagnosis is impossible. Some of the features mentioned below, such 
as the nature of the forks of the main veins, are probably of generic 
value. 
Type-species: Amboneura klosei, n.sp. 
Amboneura klosei, n.sp. 
Figures 2 and 3A 
Length of wing, as preserved, 25 mm; maximum width, 8 mm. 
Estimated length of complete wing, about 30 mm. R2+3 forked to 
about one-third of its length; R4+5 forked very shortly after its 
origin; R4 forked to about half its length, R5 unbranched. 
Type: No. 11027, in William Penn Memorial Museum, Harris¬ 
burg, Pennsylvania; collected by William F. Klose II (Field no. 
K6340) in Blythe Township, Pennsylvania; strip mine east of 
telephone poles 55—56, St. Clair-Mahanoy City Road. Allegheny 
Series of Pennsylvanian Period; Llewellyn Formation underclay. 
Buck Mt., #5 coal. This specimen consists of a nearly complete 
wing, lacking only the basal fifth; the coastal margin is broken away 
from the base to mid-wing. The rest of the wing is clearly preserved, 
with distinct convexities and concavities. 
The generic name is derived from the classical Greek words 
ambon (ridge) and neura (nerves), referring to the ridged cross 
veins, and is considered neuter plural. The species is named for 
William F. Klose II, the collector of the specimen, in recognition of 
his extensive fossil collecting and other aspects of field work done in 
the coal beds of Pennsylvania. 
I have placed this insect in the order Caloneurodea because of the 
general venational pattern of the wing and the nature of the cross 
veins. In most respects the venation is strikingly similar to that of 
Permobiella (figure 3B), from the Permian of Kansas, and to 
Caloneurella (figure 3C), from the Upper Carboniferous of Pennsyl¬ 
vania. In these two general, RS has only three terminal branches, 
