E. H. Sellards — Types of Permian Insects. 167 



Lectrum anomalum gen. et sp. n. Text figure 28. 



The costal border of the front wing is gently arched. The 

 snbcosta is but slightly arched at the base. The radial sector 

 arises in front of the middle line of the wing. The veins of 

 the wing are thin and not deeply impressed. Cu : is branched. 

 Cu 2 is forked, differing in this respect from all other genera of 

 the family. 



Length of front wing, estimated, 10 mm ; width, 3 mm . Type, 

 No. 173. 



Prosaites compactus gen. et sp. n. 



The front wings of species of this genus are compact, the 

 cross veins numerous. The radial sector is bifurcate. M, is 

 simple ; M 2 is branched. Cu x and Cu 2 are both simple. The 

 sector in the type species is united with media for a short dis- 

 tance only. 



Length of front wing, 8J- mra ; width, 3 mm . Type, JSTo. 628. 



Prosaites secundus sp. n. 



The radial sector of this species is united with M x for a dis- 

 tance of about one millimeter. M 2 is deeply forked. 



Length of front wing, 8i IQm : width, 3 mm . Type, No. 211. 



Prisca frag ills gen. et sp. n. Text figure 22. 



The front wing is elongate. The wing membrane is thin 

 and the veins indistinct. The sector is simple and is united for 

 a short distance with M r M x is simple. M 2 is bifurcate. Cu, 

 is deeply forked. Cu 2 is simple. 



Length of front wing about 9 mm ; width, 3 mra . Type, No. 128. 



Lecorium elongatum gen. et sp. n. Text figure 26. 



The front wings are slender. The sector is forked at the tip. 

 M x and M 2 are forked. Cu, is forked. Cross veins are present. 

 Length of front wing, 8 mm ; width, 2| mm . Type, No. 521. 



Ortadce, family new. 



This is a family of small insects. The front wings are elon- 

 gate, broadest beyond the middle. The subcosta reaches be- 

 yond the middle line of the wing. The radial sector is usually 

 two branched. The special peculiarity of this family is the 

 union of media and cubitus at the base of the wing. The anal 

 area is marked off by a thin line. Cross veins occur sparingly. 



The body is small, and is shorter than the wings. 



