Vicinity of Mason Creek, Illinois. 



323 



The sector rises at a quarter of the length, runs parallel to 

 and not far from the radius and sends off 2 simple and 1 

 forked branch, directed toward the margin. The media passes 

 near the radius and sector without meeting with them and 

 forms a great and wide bow, only forking near the end. A 

 great deal of the wing is occupied by the cubitus, cleft near 

 the base, the anterior main branch splitting into 2 twigs, the 

 posterior end of which is not divided and attains the posterior 

 margin, while the anterior approaches the media, sending a 

 small branch to this vein, and then regaining the original direc- 



Fig. 28. 



Fig. 28. Narkema tceniatum. 



tion splits into 3 twigs, the first and third of these forming 

 apical forks. The posterior main branch splits into 3 divergent 

 twigs, the hindmost of which again splits into 3 twigs. The 

 first anal vein being gently S-shaped, allows us to suppose 

 that, there was a lancet-shaped anal area, provided with a small 

 number of veins. Cross veins have been present in a rather 

 great number ; they are vertically situated on the main veins. 



Both wings are equally decorated by 7 transverse bands ex- 

 tending across the whole wing without regard to the venation. 



Holotype in Peabody Museum, Yale University, Cat. No. 40. 



Family CACUKGIDtE, new family. 



In this family, which I propose provisionally, are placed 

 forms regarding which I cannot with certainty discern whether 

 they are Protorthoptera or Protoblattoidea. They all agree in 

 the sector rising at a greater distance from the base and in the 

 presence of a short oblique vein, going from the stem of the 

 media to the cubitus and forming a sort of basal cell. This vein 

 evidently is a branch of the media, which unites with the cubi- 

 tus for the entire distance or for a certain space only. The 



