a! 
ia v 
KARPINSKIA, TscHEerRnyscHEw. 
Page 819, 
KarprnskiA consucuta, Tschernyschew. 
Figs. 18, 19, 20. Ventral, dorsal and profile views of the exterior. 
Lower Devonian. Ural Mountains, Russia. 
GRUENWALDTIA, Tscarrnyscuew. 
Page 818. ‘ 
; GRUENEWALDTIA LATILINGUIS, Schnur. 
markings. : ‘ 
Middle Devonian. Gerolstein, Germany. 
aa 238 
Figs. 21, 22. Dorsal and profile views; showing the contour and external 
