CRINOID GENUS SCYPHOCRINUS 29 



known in Bohemia, and they introduce into the genus a decidedly new form of 

 calyx. The protuberant interbrachials are a feature thoroughly distinct from 

 anything heretofore observed in the crinoids; a lobed form of calyx caused 

 by the projection of the radial or brachial series is common enough, but the 

 converse condition found here is something quite unique. 



The identical occurrence of such a highly specialized species of crinoids 

 as 5". elegans in the two continental areas points to a remarkable parallelism of 

 formations so great a distance apart. A like close relation has been found 

 to exist in other fossils, notably among the Graptolites, of which I am informed 

 by Dr. Ulrich that one species occurring in the Cape Girardeau beds can scarcely 

 be distinguished from a Bohemian form of the corresponding stage. 



