332 TERTIARY INSECTS OF NORTH AMERICA. 



PRINECPHORA gen. uov. (irplv, 



Allied to Palecphora, but of a still slenderer form, and in markings 

 resembling Triecphora, than which it is far more slender. Head half as 

 broad as the thorax, less than half as long as broad, very bluntly rounded, 

 and in no sense angulate in front, the middle with an exceedingly slight 

 longitudinal carina. Thorax as in Palecphora, as also the scutellum, except- 

 ing that it is equiangular. Tegmina slender, almost three times as long as 

 broad, with nearly parallel sides, relatively straight costa and broadly 

 rounded symmetrical apex ; clavus occupying about one-fourth of the wing, 

 terminating in the middle of the outer half of the same ; neuration o"bscure 

 but apparently with rather long apical cells. Wings and neuration as in 

 Palecphora, but the fourth longitudinal vein not quite so deeply forked 

 and the fork more symmetrical. Legs very imperfectly preserved in the 

 specimens known, but apparently a little longer than in Palecphora. Abdo- 

 men very full, tapering, the apical segments pinched. 



A single species is known, one of the prettiest of the Florissant Homop- 

 tera. 



PRINECPHORA BALTEATA. 

 Pi. 20, Fig. 14. 



Head and thorax finely granulated, the eyes apparently margined nar- 

 rowly with black. Tegmina similarly but less conspicuously granulated, 

 blackish fuliginous, deeper in tint on the basal than on the apical half, 

 marked with two broad, pale, transverse bands, which are broadest on the 

 costal margin : the first occupies the base, crossing the entire wing, and is 

 bounded outwardly by a curved line, angulate at the sutura clavi, which 

 runs from about the end of the basal third of the costal margin inward ; the 

 second, sometimes narrowly connected with the first along the costal edge, 

 runs from the costal margin to the sutura clavi as the amalgamation of two 

 spots : a circular one resting on the sutura, its inner edge at the center of 

 the wing, and a triangular one, its base seated on the costal margin and its 

 apex about the center of the circular spot. 



Length of body, 7.75 mm ; of tegmina, 6 ram ; breadth of thorax, 2.5 mm . 



Florissant. Four specimens, Nos. 8886, 9198, 11774, and from the 

 Princeton Collection, 1.604. 



