96 Psyche [April 



to apex of wing ? mm.: length of eellula thyridii 7 mm. In some 

 ways, this species is suggestive of Neuronia. Scudder's figure 

 shows a distinct mottling, suggestive of N. pardalis Walker, but 

 the apex of the wing is much blunter than in pardalis. In shape, 

 the wing is more like that of N. ruficrus, but the apical part of the 

 costa is not so rounded as in that insect, and the anal angle is 

 rather more distinct. The wing-form of P. labefacta is not unlike 

 that of the amber P. longirostris Hagen, but our insect has the 

 costa much straighter, the anal angle more distinct, and the wing 

 hardly so broad in proportion to its length. The comparatively 

 distinct anal angle is as in the amber P. singularis Ulmer. 



Phryganea miocenica <p. nov. 



A very fine species, collected by one of the University of Colorado expeditions, 

 but the collector and station are not recorded. It is represented by an upper wing, 

 very well preserved except for the loss of a considerable part of the region of the 

 anal angle. It appears to represent a female, and is a quite typical Phryganea, 

 with relatively long wings. 



Upper wing about 21 mm. long, 9 wide, as preserved red-brown, the costal region 

 broadly darkened, the anal region dusky, the veins dark on a lighter ground. Owing 

 to the dark costal cell, the oblique cross-vein between the costa and subcosta cannot 

 be clearly demonstrated, but a kink in the subcosta indicates its point of origin. 

 The discoidal cell is about ~\ mm. long; eellula thyridii 9 mm.; apex of wing to 

 base of discoidal cell slightly over 16 mm. 



Compared with the female of the amber P. latissimaVlmer, there 

 is close agreement in venation, though our insect is much longer- 

 winged than latissima, yet not so long (narrow) winged as P. 

 dubia. Compared with P. latissima, the second anal cell of P. 

 miocenica is longer and narrower, its lower side more convex; the 

 eellula thyridii is longer and narrower; the apical angle of the dis- 

 coidal cell is much more acute. The lower branch of the media 

 forks is in 9 latissima; owing to the loss of part of the wing, only 

 the extreme base of the fork is visible. 



This is the largest of the Florissant Trichoptera, and is con- 

 siderably larger than any of the amber species of Phryganea. 



