()78 



PnO('EKI)IS<;s OF THE NATIONAL MUSEUM. 



\\\v inodiii issues soiuewliat abovo tho niiddle of the wing- and forms a 

 large curve with a small tei'miual fork. The inferior ))raMch sei)arat(\s 

 into 2 or (;!) 3 veinlets; then foUows a strongly vaulted vein, which in 

 its last third divides into '2, wide forks, and issues eithei- from the 

 entire cubitus or only from its superior branch. Further on there is 

 then seen a similarly curved vein with a short, broad terminal fork; 

 this may pertain to the inferior branch of the cubitus or to the first 

 atial vein. Beyond this still another ^■ein is visible, whiclr runs ofl" in 

 a nearly horizontal curve to the inner border, and forms a small forked 

 end after it had sent off a larger l^ranch obliquely l)ack\vard and out- 

 ward; finally, a simple ai'cuate vein may be seen. Both the latter are 

 anal veins. To all appearance about 5 to 6 anal veins may have been 

 present. The wide interspaces l)etween the branches of the medial, 

 cubital, and anal veins are A^ery striking; all the intiu'vals are bridged 

 over b}^ delicate, somewhat undulating, and occasionally l)rapched 

 cross veins ruiming in an obliijue direction. 



HEOLUS PROVIDENTI.E, new species. 



^Locality. — East Providence, Rhode Island. Pemisylvanian; Alle- 

 ghenv or Conemaugii stage. 



'il^"-::^''-- — ■ 



Fig. 5. — Heouis PRovinEXTT.K. 



Length of the well-preserved fragment, 40 mm.; probable length of 

 the entire Aving, 50 nmi. 



Ifolofj/pe.—OAi. No. 38700, U.S.N.M. 



Family POLYCREAGRID.F, new family. 



I establish this family on a l)eautiful, large paltBodictyopteran wing 

 from North America, which in respect to the structure and copious 

 branching of the principal veins recalls the spilapterids of P^ui'ope; in 

 the form of the anal area, on the contrary, it appears more like Lam- 

 proptil/a^ and in the furcation of the medial and cubital veins calls the 

 dictyoneurids to mind. 



POLYCREAGRA, new genus. 



Wing broadest at the base and of subtriangular form, fully three 

 times as long as wide, with distinctly cur\'ed anterior margin. Costa 



