EXPLANATION OF PLATE 8. 



Page. 



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



2, 3, 5. Cidarites ttnnesseex 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 Cyathocrinites 

 stellatus 34 



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

 specimen described by Troost as Cyathocrinites 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 describee! by Troost as 



Asterias tennesseex 106 



132 



