PLATE VI. 



PAGE. 



Receptaculites Ohioensis 123 



Fig. 1. Lateral view of a liemispherioal specimen, allowing the large rhomboidal cells over the dome 

 and the narrower crowded cells on the larger vertical portion. 



InOCAULIS BELLA .' 122 



Fig 2. View of the specimen used in description of the species, from a photograph of the original. 



PlATYCRINUS PKiEMATCRUS 124 



Fi''. 3. Basal view, as shown in giitta percha casts taken in the nntural mould 



4. Lateral view, obtained in the same manner as above, showing the structure of the cup to the 



base of the free aims. 



5. Basal view of an internal cast of the calyx. 



6. Lateral view of the same specimen as fig. 5. 



Saccocrinus ornatus 126 



Figs. 7 and 8. Anal and anterior views of .an internal cast of the body and probo.scis of a specimen. 

 Fig. 9. Postero-liiteral view of a guttapercha cast taken in the matrix of the specimen figs. 7 and 8, 

 showing the surface structure of the plates of the left postero lateral ray and aual area. 



Saccocrinus Tennesseensis 125 



Fig. 10. View of an internal cast, showing the anterior and left antero lateral rays, the interradial 

 area being central. 



EUCALYPTOCRIXUS CKASSU.S .'■ 129 



Fig. 11. View of an internal cast of a specimen from Cedarville, Ohio, referred to this species. 



Eucalyptocrinus splexdidus 128 



Fig. 12. View of an internal cast of a specimen imbedded in the matrix, sliowing the filling of the 

 visceial cavity of the body and that of the funnel-shaped canal communicating with it, 

 and the imiiression of the inteibrachial plates. 



PeNTREMITES SUB-CYLIXDRICA 129 



Fig. 13. View of the specimen described, showing the form and mze of the ambulacral areas, and also 

 of the radial and tops of the basal plates. 



CaLYMENE NiAGARENSIS ^ 153 



Fig. 14. View of a specimen of the .species, showing the form of the thorax. The head and pygidium 

 are bent downwards in such a manner as to give only a portion of their lengtli in this 

 view. The example is an internal cast. 

 15. An outline profile ot the same specimen, showing the manner In which the specimen is bent. 



EXCRINURUS ORNATUS 154 



Fig. 16. View of the pygidium and part of the thorax of an internal cast, showing the features as 

 described. 



LlCIIAS BREYICEPS 156 



Fig. 17. View of a fragment of the cephalic shield, showing the glabella and lateral lobes. The out- 

 line restoration is partially from a .specimen from Wisconsin, and may not correspond ex- 

 actly with what this raav have been. 



