Upper Palaeozoic and Afesozoic Fossils. 335 



3. — A. daintreei, sp. nov. Radial section of wood from the 

 centre, showing pith cells. x ISO. 



Plate XXX. 



Fig. 1. — Ctenostreon pectiniformis. Schlotheim, sp. Left 

 valve. Nat. size. [2063]. 

 2. — Perisphinctes chanipionensis, Crick. One-half of 



aptychus. Nat. size. [2069]. 

 3. — Araucarioxylon daintreei, sp. nov. Radial section of 

 wood, showing tracheides with bordered pits. 

 X 230. 

 4. — A. daintreei, sp. nov. Radial section, showing scalari- 

 forni tracheides of the protoxylem. x 230. 



