Trans. Roy. Soc. Edinf- 



Vol.. XLDi 



F. A. Bather : Caradocian Cystidea. — Plate IV 



Herrlnft, Photo. 



COTHURNOCYSTIS CUBVATA (39—45), C. SP. (46—47); 



Cheibocrinus interbuptus (48), 0. constrictus (49—56). 



stereoscopic Co,, Collotype, Lond< 



