540 TERTIARY INSECTS OF NORTH AMERICA. 



PALLOPTERA FalUn. 



Pallopteea morticina. 

 PI. 3, Fig. 15. 



Palloptera morticina Scudd., Rep. Progr. Geol. Surv. Can., 1875-1876, 278 (1877). 



An indistinguishable crushed mass of chitine and the basal half or more 

 of a single wing are all that remain of this creature. The wing is small and 

 probably was not over three millimeters long ; hyaline, with a slight infu- 

 mated spot of considerable size in the middle of the wing between the two 

 transverse veins ; the basal cells are small ; the auxiliary vein is very slight, 

 and throughout very closely approximated to the first longitudinal vein ; 

 the latter appears to be short and nearly straight, bare of bristles, but pubes- 

 cent like the rest of the wing ; the costal vein is bristly, but like all the 

 others is pale testaceous ; the small transverse vein lies within the tip of the 

 first longitudinal vein ; the large transverse vein is straight and perpendic- 

 ular to the costa, removed from the small transverse vein by double its own 

 length. 



Length of fragment of wing, 2.1.5°"". 



Quesnel, British Columbia. One specimen, No. 20 (Dr. G. M. Daw- 

 son, Geological Survey of Canada). 



Family ORTALID.^ Fallen. 

 LITHORTALIS Scudder. 



Lithortalis Scudd., Rop. Progr. Geol. Surv. Can., 187.''>-1876, 276-277 (1877). 



This ortalid can certainly not be referred to any of the American 

 genera mentioned by Loew. It is most closely allied to Ceroxys, but besides 

 a different distribution of the spots the neuration of the wing varies so much 

 from that of Ceroxys as to render it certain that it should be separated from 

 it. The shape of the wing is much as in Ceroxys, especially as in C. canus 

 Loew, to which it is also most nearly- allied in markings ; the first longitud- 

 inal vein has bristles upon its end only, and even here they are few and 

 small ; the fourth longitudinal vein is curved backward a little, and the pos- 

 terior angle of the third basal cell is not at all produced ; the third and 

 fourth longitudinal veins diverge at their tips, while the second and third 

 converge. In Ceroxys the auxiliary runs beside the first longitudinal vein 



