PLATE Xa. 

 AsTROPECTEN Orion, Fofbes. 



From the Kelloway Bock. 



Fig. 



1> AsTROPECTEN Orion, Forbes, p. 127. Ventral surface, natural size. 



2. AsTROPECTEN CLAV/EFORMis, Wright, p. 125. Ventral surface, natural size; this is a 



four-rayed variety of the large species, figured in Plate XI. 



3. AsTROPECTEN Phillipsii, Forbcs (?). Copy of the figure of an Astropeden found 



in the Cornbrasli, near Yeovil, from the ' Magazine of Natural History,' 

 vol. ii, p. 73, for 1829. 



