PLATE IL 
‘Figs. 1, 1a. HETEROCRINUS VAUPELI—Mr. Vaupel’s collection, 
Figs. 2, 2a. RETEOCRINUS GRACILIS—Mr. Vaupel’s collection, 
Fig. 3. CYRTOCERAS IRREGULARE—Prof. Wetherby’s collection, 
Fig. 4, TREMATODISCUS KoNINCKI—Prof. Wetherby’s collection, 
| < Figs. 5, 5a. COLPOCERAS CLARKEI—Prof. Wetherby’s collection, 
Figs. 6, 6a. CYRTOCERAS CONOIDALE—Prof. Wetherby’s collection, 
Figs. 7, 7a. ISOCHILINA JONESI—Prof. Wetherby’s collection, 
Figs. 8, 8a, 9, 9a. PROETUS GRANULATUS—Prof. Wetherby’s collection, 
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