PLATE A 111. 



Mesoblastus i .i.d.Mi atus, G. B. Sby., sp., p. L86. 



P j 

 Fig. 1. Radial view of the calyx, with the long and broad ambulacra and Bmall deltoids. 



Carboniferous Limestone, Lancashire. x2 I J 



Fig. 2. Portion of a radial view oi' the apex taken at an oblique angle, so as to show the 



divided spiracles. x4 104 



Fig. 3. Basal view of the same specimen. x2 15 



Fig. 1. Summit view of the same, with the divided spiracles. x2 104 



Mesoblastus Sowerbii, E. §• C, p. 187. 



Fig. 5. Portion of a much enlarged ambulacrum, showing the barely visible lancet-plate, 

 the side and outer side plates, the pinnule-sockets, and the hydrospire-pores. 

 Carboniferous Limestone, Lancashire. x 10 00 



Fig. 6. Interradial view of a portion of the summit seen obliquely. Carboniferous Lime- 

 stone, Lancashire. x 4 49 



Mesoblastus angulatus, G. B. Sby., sp., p. 185. 



Fig. 7. Interradial view, showing the very large radials and small deltoid plates. Carbo- 

 niferous Limestone, Lancashire. x H 30 



Fig. 8. Basal view of the same specimen, showing the very contracted base and the small 



central depression lodging the basal plates. xl| 15 



Sciiizoblastus Rofei, E. § C, p. 228. 



Fig. 9. Summit view, showing the double spiracles and the highly ornate calyx. Carbo- 

 niferous Limestone, Ireland. x6 110 



Fig. 10. Interradial view of the same specimen, showing the form of the deltoid plates, 



and the position of the radio-deltoid suture. x 6 29 



Fig. 11. Portion of an ambulacrum of the same individual. x 24 62 



Gkanatockim's McCoyi, E. §■ C, p. 252. 



Fig. 12. Summit view, showing the large spiracles with thickened margins. Carboniferous 



Limestone, Lancashire. x 8 107 



Granatocrinus campaxulatus, McCoy, sp., p. 251. 



Fig. 13. Inferior aspect of the calyx, showing the broad, almost ilat base, anil the large 



columnar facet. Carboniferous Limestone, Lancashire. x5 15 



Fig. 14. Interradial view, showing the form of the calyx, and the position of the radio- 

 deltoid suture. x 5 25 



Fig. 15. Portion of an ambulacrum, showing the median groove of the lancet-plate, the side 

 and outer side plates in position on the right, and on the left their impressions 

 on the upper surface of the lancet-plate. x 20 49 



