NEW AND LITTLE-KNOWN INSECTS FROM THE 

 MIOCENE OF FLORISSANT, COLORADO 



T. D. A. COCKERELL 



University of Colorado 



TRICHOPTERA 



Phryganea wickhami n.sp. 



$> Upper wing as preserved uniform light reddish brown, with 

 the venation distinct but not dark; length 22 mrii., width 8|; apex 

 of wing to base of discoidal cell 13I mm.; length of discoidal cell 

 6 mm., of cellula thyridii not quite 7^; venation normal for a male, 

 the media with only three branches ; Ri apically with a very strong 

 double curve. The shape of the wing is practically as in P. latissima 

 Ulmer, from amber; the venation differs from that of the amber 

 species as follows: R2 leaving discoidal cell more basad, about 2\ 

 mm. before R3 leaves it; separation of Mj from M2 at same level as 

 separation of R3 from discoidal cell; upper. apical corner of cellula 

 thyridii (separation of M2 from M3) only a short distance basad of 

 separation of R2 from discoidal cell; obhque basal side of cell 

 between Cui and Cu2 longer; cell below Cuz smaller. In the char- 

 acters of venation wherein P. wickhami differs from P. latissima, it 

 agrees closely with P. singularis Ulmer, another amber species. 



From the other Florissant species of Phryganea, P. wickhami is 

 distinguished especially by the shape of the wings, which are not 

 elongated as in P. miocenica Ckll., or with the apical margin 

 truncate as in P. labefacta Scudder. 



Miocene shales of Florissant, Wilson Ranch (H. F. Wickham). 



At the same place Professor Wickham found one of each sex of 



P. labefacta. 



NEUROPTERA 



Raphidia pidveris n.sp. 



Anterior wing 11 mm. long, not quite ^^ broad; costal area 

 broad, with ten cross-veins; stigma about 2 mm. long, the lower side 

 a little over imm., oblique cross-vein very distinct; two cells on 

 costa beyond stigma; subcosta ending nearly i mm. below base of 



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