1972] 
Zhelochovtzev & Rasnitsyn — Sawfties 
323 
This specimen was incorrectly determined by Brues as belonging 
to Lithorvssus parvus (1908: 272). 
Mesoneura (?) vexabilis (Brues), comb. nov. 
Figure 9 
Scolioneura vexabilis: Brues, 1908: 262, fig. 4. 
Lisconeura vexabilis: Rohwer, 1908a: 529 (Argidae, Schizocerinae) . 
Venation and form of antennae similar to those of Mesoneura 
Hartig. M. vexabilis differs from recent species of the genus mainly 
by the broader radial cell. 
Material examined: Holotype No. 2039 (Museum of Compara- 
tive Zoology, Harvard University), Oligocene of Florissant, Colo- 
rado. 
Eohemichroa gen. nov. 
Figure 10 
Type species — Hemichroa eophila Cockerell, 1906: Oligocene of 
Florissant, Colorado. 
First segments of antenna are long and broad, nearly as broad as 
the first segment of hind tarsus. In fore-wing SC occurs before 
R + M, the latter is not shorter than the greatest breadth of cell 
ir. Cross-veins 2r-rs, 2r-m and 3r-m, as well as RS between ir 
and 2rm are present. 2r-m is situated far behind 2m-cu, im-cu is 
almost in the middle between the base of RS + M and 2m-cu. RS 
and M moderately diverging behind 2r-m, almost straight. Cell 
1 a is closed, the distance between it and 2a nearly equal to a half 
of the cell ia length. First segment of hind tarsus long, a little 
shorter than half of the tibia. 
Venation of the insect is very similar to that of Hemichroa 
Stephens, and differs only by the shorter distance between the anal 
cells. It also differs from Hemichroa by the stout antenna, the 
long first segment of the hind tarsus and the more slender body. 
Material examined: photograph of Holotype No. 18919 of 
Hemichroa eophila Cockerell (American Museum of Natural His- 
tory, New York), Oligocene of Florissant, Colorado. 
Family Pamphiliidae 
Acantholyda (?) caplani (Cockerell), comb. nov. 
Figures 11 and 12 
Cephaleia caplani: Cockerell, 1933 : 186, fig. 1. 
This insect differs from all recent Pamphiliidae by the long cells 
ir and imcu (both less than twice as long as their widths). It also 
