EXPLANATION OF PLATE 8. 



Page. 



Fig. 1. Palaeaster antiqua (Troost), ventral view, restored 105 



2, 3, 5. Cidarites tennesseeze Troost, spines referred by Troost to the genus 



Cidaris ^ 108 



4. Spine base, probably of the same species. 



6, 7, 8. Barycrinus stellatus (Hall), basal, top, and side views of the dorsal 

 cup. The projections on the base of the specimen are represented 

 as much too prominent. Figure of Troost's type of Cyaikocrinites 



stellatus 34 



9, 10. Chirocrinus angulatus, new species, side and basal views of the 

 specimen described by Troost as Cyaikocrinites sculptus. Both 

 figures are more regular than the specimen and the basal excavation 



is quadrilateral instead of pentagonal, as represented 7 



11. A pseudomorph, side view of the specimen described by Troost as 



Asterias tennesseeze 106 



132 



