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Dichocbinus pbntalobus (Cass, and Lyon) 775 



Fig. 11a. Lateral view of the type specimen ; somewhat crushed. (Coll. S. S. Lyon.) 

 lib. The fixed brachials, enlarged (f). 



lie. An imperfect specimen, showing parts of the pendant arms. (Coll. S. S. 

 Lyon.) 



Hexaceintjs Leai (Lyon) 746 



12a. Anterior view of type; the lower brachials and a few joints of the stern 



restored from another specimen. (Coll. S. S. Lyon.) 

 125. Basal cup of same specimen. 



Dichoceinus scitulus Hall 767 



13a. Side view of a large specimen with arms, from the Lower Burlington lime- 

 stone. (Coll. W. and Sp.) 



135. A small specimen from the Upper Burlington limestone. (Same collec- 

 tion.) 



14. Side view of a specimen with arms from the same horizon. (Same collec- 



tion.) 



Dichoceinus pendens W. and Sp 774 



15. Specimen with pendent arms from the Upper Burlington limestone. (Coll. 



W. and Sp.). 



Dichoceinus ficus Cass, and Lyon 774 



16a. Posterior view of the calyx. (Coll. W. and Sp.) 

 165. Side view of another specimen. (Same collection.) 



