NEUROPTERA— TRICHOPTEKA— PHKYGANID^. 197 



nia. The upper branch of the sector originates earlier than usual, close to 

 the base of the discal ceil, which is short, as in Neuronia, but only because 

 the cross-veins which terminate are carried to an unusual distance toward 

 the middle of the wing, and are therefore widely separated from the cross- 

 veins uniting the sector with the cubitus — an unusual feature in this sub- 

 family, and one which with its other peculiarities renders it probable that it 

 should be generically separated from living types. There is also lacking 

 the ziffzao- arrano-ement of the cubital cross-veins, though their exact rela- 

 tion can not be determined throughout. The hind leg bears two pairs of 

 tibial spurs, as always in this subfamily. 



The length of the body is indeterminable ; the lengtli of body and wings 

 together in repose is 24™™ ; of front wing, 20.5™'" ; greatest breadth of same, 

 S.S"-" ; length of hind tibia, 3.65°"" ; of hind tarsi, 4,65™". 



Florissant. One specimen. No. 7728. 



PHRYGANEA Linnd. 



Species of this genus are by no means unknown in a fossil state; 

 indeed it is the only genus of Phryganidse which has heretofore been 

 represented in the rocky strata by remains of the perfect insect, and while 

 only two species are known from amber, four have been described from 

 Tertiary rocks (Aix, Mombach, Parschlug, and Greenland) and a fifth indi- 

 cated from the Isle of Wight. Very likely some of these may be found to 

 belong elsewhere, but their large size would lend a probability to their 

 proper reference here, since this genus and its allies contain the largest of 

 the caddis-flies. We have here a single species to add, represented wholly 

 by wings, but very well preserved. The genus is mostly confined to North 

 America and Europe. 



Pheyganea labefacta. 



PI. 13, Fig. 5 ( ^ ). 



An excellently preserved front wing, lacking only a fragment broken 

 from the lower outer angle, represents a male. It is of a nearly uniform 

 smoky brown tinge, with much darker distinct veins, and delicately mottled 

 with faint, pale, circular dots which are larger and therefore more noticeable 

 than elsewhere in the upper outer half of the vving, and are absent from the 

 center. It is of about the size of our common Neuronia semifasciata (Say) 

 but of a different shape, being subquadrate, about three times longer than 



