PLATE VI. 



Receptaculites Ohioensis 123 



Fig. 1. Lateral view of a hemispherical specimen, showing the larger rbwmltoitlal cells over tlii* doHi'e 

 and the narrower crowded cells ou the larger vertical portion, 



InOCAULIS BELLA ,...« 322 



Fig 3. View of the specimen used in description of the species, from aiphofc ograph of the- ©ffiginati, 



PlATYCRINUS PK.EMATURUS ^ — 124 



'Fig. 3. Basal view, as shown in gutta percha casts ta.ken in the natural nouil d. 



4. Lateral view, obtained in the same manner as above, showing th& tAn icture of the* •wp' to- the 



baae of the free arms. 



5. Basal view of an internal cast of the calj-x. 



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



Saccocrinus oknatus 126 



Figs. 7 and 8. Anal and anterior views of an internal cast of the body and proooscis of a i^ieci'mc'D. 

 Fig. 9. Postero-latei'al view of a gutta-percha cast taken in tbe matrix of the) specimen figs. 7 and 8, 

 showing the surface structure of the plates of the left postero later a I ray and anaK area. 



Saccocrinus Tennesseensis ^^ 125 



tHg. 10. View of an internal cast, showing the anterior and left antero-later a] rays, the inlMitradia] 

 area being central. 



EUCALYPTOCRINUS CRASSUS ^^ 129" 



Fig. 11. View of an internal cast of a specimen from Cedarville, Ohio, referred! :to this speciesi- 



EUCALYPTOCRINUS SPLENDIDUS 128- 



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

 visceral cavity of the bodj? and that of the funnel-shaped canal C'OnL'aiuiiicating wiiU it, 

 and the impression of the interbrachial plates. 



PeNTREMITES SUB-CYLINDRICA ^ 129' 



Fig. 13. View of the specimen described, showing the form and size of the amb ul acral areas, aa^ 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. Tftn head and py^vdinm 

 are bent downwards in such a manner as to give only a portion vS their length v& this 

 view. The example is an internal cast. 

 15. An outline profile of the same sx)ecimen, showing the manner in whicllKll le specimen is Trent. 



Encrinurus ornatus *..., 154^ 



Fig. 16. View of the pygidium and part of the thorax of an internal cast, sbsmring the featores as 

 described. 



LiCHAS BREVICEPS „ 15& 



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

 line restoration is martially from a specimen from Wieconsin, and nnky '^ot correspond ex- 

 actly with what tma may have been. 



