PLATE XLII. 



Tests loith Spi/ies attadied. 



Fig. 1. Salenia Clarkii, Forbes, with bent spines attached and in situ. Rev. T. 



Wiltshire, P.G.S. (P. 177). 



2 a. „ Clarkii, Forbes. Test, with bent spines. Rev. T. Wiltshire, 



P.G.S. 



6. „ „ Spine bent near the middle, magnified three 



times. 



c. „ „ Base, showing lines and milled ring, magnified 



six times. 



d. „ „ Section of a spine, magnified six times. 



3. „ PETALiFERA ? Desm. Test, with spines, natural size. British Museum. 



(P. 170). 



4. „ „ Do. do. do. Rev. T. Wiltshire, 



F.G.S. 



5 a. „ Clarkii, Forbes. Do. do. do. Royal School of 



Mines. 



b- „ „ Portion of spine, magnified six times. 



c. „ ,, Do. do. do. 



