1987] 
Carpenter — Family Syntonopteridae 
375 
Fig. 2. Syntonoptera schucherti Handlirsch, hind wing. Venational pattern of 
specimen in Fig. 3b. 
basal segment of MA diverging from MP to R, since that area was 
damaged in the fossil. I now think that the divergence probably 
occurred nearer the wing base. The wide area between MA and MP 
is like that of the type of schucherti. 
The specimen that Dr. Richardson sent me a few years ago is in 
the collection of the Field Museum of Natural History, Chicago. It 
was found by Ida Thompson at Pit 11, Will County, Illinois, in 
1928, and has the catalogue number PE 162 16. It consists of a nearly 
complete wing, lacking some of the base and a little of the apex. 
(Fig. 3). It is 100 mm long, as preserved, and probably had an 
original length of 1 10 mm. Since the size and venation are consistent 
with those of the type of schucherti, I consider this to be the hind 
wing of that species. Although more of the wing area is preserved 
than in the other two specimens, the preservation is not as good as 
that of the type. Only vague indications of the cross veins can be 
seen. The costal area, as usual in hind wings, is narrow, only about a 
third as wide as the subcostal area. (Fig. 2). The stem of RS is very 
close to the base of R but its actual origin has broken away. The 
base of M A is also very close to RS but, in contrast to the fore wing, 
MP is very near MA, indicating that the basal piece of MA, diverg- 
ing from M, must have been very short. CUA and CUP are essen- 
tially as in the fore wing except that CUA, a very strong vein, is 
more oblique and curved. The anal veins are similar to those of the 
fore wing but with a difference of inclination because of the broad 
anal area. 
