348 



E. H. Sellards — Types of Permian Insects. 



than is the case with most other genera of the family. The 

 radius is thickened at the base. The costal brace is strong. 

 Cross veins are numerous, but weak. The abdomen is long, 

 being fully twice the length of the thorax. 



Protereisma permianum n. sp. Text figure 3. 



This, the type species of the genus, is large, and is to be 

 recognized by the long cubitus, reaching beyond the middle of 



Fig. 4. A male specimen of the genus Protereisma, probably P. permianum, 

 or the related P. latum. Head, thorax and abdomen preserved; also the 

 bases of the wings and parts of the legs. The forceps are thick and strong. 

 Enlarged 4 times. 



the wing. The cross veins are numerous, but so weak as to be 

 but indistinctly preserved. 



Length of the front wing, 20 ram ; width, at the middle, 6 mm . 



Length of hind wing, 18 to 19 mra ; breadth, 5 3/4 mra . 



Length of abdomen/20 mm ; total length of body, 28 to 30 mm . 



Protereisma minus n. sp. Text figure 9. 



This is a small species. The wing is thin and flat, the 

 veins thin; the cross veins numerous, but weak. The cubitus 

 is short, not reaching beyond the middle of the wing. 



Length of wing, J 6 mm ; width, 4 2/3 mm . 



