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DiCHOCEiNUS pisuM M. aud W 763 



Fig. 10. Posterior side of the dorsal cup. (After Meek and Worthen.) 



DiCHOCKiNus STKiATUs 0. and Sh 757 



11a. Posterior side of the dorsal cup. 

 lib. Side view of another specimen. 



DicHocRiNus iNOENATus W. and Sp 770 



12a. Posterior view of a specimen with arms. 

 12b. Another specimen. 



DiciiocEiNus DELiCATus W. aud Sp 766 



13. The type specimen. 



(All the specimens, except In, b and 10, are in the collection of Wachsmuth 



and Springer.) 



