334 TERTIARY INSECTS OF NORTH AMERICA. 



This genus seeuis to tail sooiewhere oetweeu Cephisus and Averuus, 

 but the structure of" the hind legs is not known. It was an abundant ty]>e 

 in the Florissant basin, five species being already kuoAvn, most of them by 

 a considerable number of examples. 



Tahle of the species of Pahiphrodes. 



Middle ol' the tegmina tniversed, at least on the costal edge, by a bhiek band ; no long baso-costal 

 stripe. 

 MiddU' stripe of tegmiua distinctly traversing the wing transversely withont change of breadth ; 



neiu'ation distinct 1. t'. cintto. 



Middle stripe of tegmiua not distinctly traversing the wing transversely witliont rbaugeof l)readtb: 

 neuratiou indistinct. 

 Middle stripe of tegmina conlioed to a spot on the costal edge and this usually somevrliat 



obscure 2. P. ohscnra. 



Middle stripe of tegmiua directed obliquely outward. 



Snbn.pical costal stripe of tegmiua moderately oblique and moderately broad, with irreguhir 



margins 'A. P. irregularis. 



Suhapical costal stripe of tegmiua veiy oblique, very slender, with sharply detiued straight 



margins 4. P. obliqua. 



Middle of the tegmina traversed by a pale band ; a long and broad baso-costal dark stripe. 



5. P. transversa. 



1. Palaphrodes cincta. 



PI. 20, Fig. 16; PI. 21, Fig. 15. 



Body uniformly dark colored, the incisures of the abdomen paler. The 

 species is distinguished by the markings of the tegmina and the distinctness 

 of the neuration, the latter due to its being traced in black throughout the 

 apical half of the wing ; the ground of the tegmina is pale, perhaps diapha- 

 nous ; the base is blackish, makfng here a large triangular patch with very 

 irregular outer outline ; across tlie middle of the wing, separated from the 

 basal patch by the length of the latter, is a broad, equal, straight, transverse, 

 blackisli stripe or bar often deepest in color on the costal half or becoming 

 fuliginous on the inner half ; its edges, and especiall}^ its upper, are tolerably 

 straight. It is followed at an equal distance on the costal margin by a 

 slender, oblique, black, and narrowing stripe just before the apical cells, 

 generally running about half-way across the wing, parallel to the hind 

 margin. 



Length of body, 9.5'""' ; breadth of tliorax, 3.3""" ; length of tegmina, 

 X""" ; breadth of closed tegmina together, 5.5"". 



Florissant. Thirteen specimens, Nos. 208, 582, 6908, 11238, 12034, 

 13555, 13573, 14234, perhaps 1632, and of the Princeton Collection 1.505, 

 1.813 and 1.841, 1.815 and 1.839. 



