new and Uttle-hnown Palsearctic Perlidse. 63 



Explanation op Plate II. 



Nenioura Sahlbergi, $ . 



Fig. 1. Apex of abdomen from beneath. 



2. Apex of lateral appendage from side, internal aspect (more 



enlarged) . 



3. Apex of lateral appendage from side, external aspect (more 



enlarged). 



Tceniopteryx Bisl, $ . 



1. Apex of abdomen from side (from fresh example and much 



enlarged). 



2. Ventral plate from side (dry). 



3. Apex of ventral plate from above (dry). 



Tceniopteryx tr/fasciata, $ . 



1. Apex of ventral plate from above (dry). 



2. Apex of abdomen from side (dry). 



Capnia nigra. 



1. Apex of abdomen of $ from side. 



2. Apex of penis (?) from side in outline much enlarged 



(Scotland). 



3. Apex of penis (?) from side in outline much enlarged 



(Turkestan). 



4. Neuration of anterior wing of ? , a, h, intercubital cellules. 



5. Neuration of posterior wing of $ . 



Capnia atra, $ . 



1. Apex of abdomen from side. 



2. Intercubital cellules of anterior wing. 



3. Dorsal view of side piece of genitalia (much enlarged). 



Capnia affinis, $ . 

 1. Apex of abdomen from side. 



Capnopsis Schilleri. 



1 . Neuration of anterior wing. 



2. Neuration of posterior wing. 



3. Apex of abdomen of $ from side, nearer seta removed. 



