﻿262 SMITHSONIAN MISCELLANEOUS COLLECTIONS [VOL. 47 



Scotland zone of the Helderbergian, which is regarded by most 

 paleontologists as near the base of the Lower Devonic. The other 

 American occurrences are in the lower portion of the Manlius, the 

 last stage of the Siluric. 



Bohemia. — In the summer of 1903 the writer visited one of the 

 localities in Bohemia furnishing Cainarocrinus and Scyphocrinus in 

 association, on the same bed of limestone. This locality is an aban- 

 doned quarry in the Schwartze Schlucht near Kuchelbad, a few 

 miles up the Moldau river from Prague. It is the locality referred 

 to by Dr. Jahn in his letter quoted above. Here is exposed a very 

 extensive, nearly vertical wall of black limestone, with a thin shale 

 surface. This limestone forms a horizon near the top of E e/3 of 

 Barrande's section and is regarded as the transitional zone to E e2. 

 The horizon is to be correlated with the American Rochester shale. 

 On the wall are seen many flattened globular bodies, some of which 

 are Lobolithits, or rather Cainarocrinus, and poorly preserved thecse 

 of Scyphocrinus. One of the latter preserved a long column prob- 

 ably not less than 3 feet in length, extending toward and terminating 

 upon a Cainarocrinus. The evidence then appeared to the writer so 

 convincing that he told Dr. Perner, who had guided him to the 

 locality, that there seemed to be no longer any doubt of Scyphocrinus 

 and Cainarocrinus belonging to one species. The proof, however, 

 was decidedly at variance with the American occurrence of Cainaro- 

 crinus, as crinoids are never found associated with it. Finally, the 

 writer observed that the long column of Scyphocrinus lying across 

 the Cainarocrinus was at least twice as thick as any column of the 

 latter he had seen. Since then he has deter- 

 1t~ mined that the central canal in the column 



®of Cainarocrinus is different in shape and very 

 much smaller in size than in the associated 

 Scyphocrinus columns. These differences are 

 Fig. 42.— Transverse illustrated in the accompanying figure 42. 

 sections through the These figures of the central canal in the col- 



stalks, a, of Scyplio- umn f Scypliocrin us are from close to the 

 crinus elegans Zenker. th faut ^ ^ ^ an( j ^ of ^ canal 



near theca ; b, a thick . , 



„.„,, e r are near the other extremity of the column 



stalk of Comoro crinus J 



ulrichi, near roots. can not n °w be stated. Granting, for the pres- 



ent, that the canal near the root end has the 

 size and shape of that in Cainarocrinus, the size of the column in the 

 latter is still considerably smaller than the column of Scyphocrinus 

 which the writer saw lying across the bulb in the abandoned quarry 

 near Kuchelbad. It therefore does not appear that the two parts can 

 beloner to one animal. 



