PLATE XXVI. 



Page 

 DoLATOCRiNus Maeshi Lyou 312 



Fig. la. The type specimen ; posterior view. (Coll. S. S. Lyon.) 

 lb. Dorsal aspect of same specimen. 

 Ic. Ventral aspect of same. 

 Id. Inner floor of the inverted basal cup, showing its derivation from 3 plates. 



DOLATOCRINUS GLYPTUS Hall 317 



2a. The type specimen; posterior view. (Am. Mus. Nat. Hist. N. Y.) 

 2b. Basal aspect of another specimen. (Coll. J. M. Clarke.) 



DOLATOCEINUS LIRATUS Hall 319 



3. A somewhat flattened specimen. (Am. Mus. Nat. Hist.) 



PoLATOCRiNus TRiADACTYLus Barris 316 



4a. The type specimen ; anterior view. (JNIuseum Davenport Acad. Sci.) 



ib. Another specimen, giving a posterior view of the calyx. (Same collection.) 



4c. Another showing the dorsal view of calyx. (Coll. W. and Sp.) 



id. Ventral aspect of the same specimen. 



DoLATOCRiNus icosiDACTYLus W. and Sp 319 



5a. Dorsal aspect of calyx. (Coll. V. W. Lyon.) 



5b. Posterior view of the same specimen. 



5c. Ventral aspect of same. 



5d. Dorsal aspect of another specimen. (Coll. W. and Sp.) 



DOLATOCRINUS LACUS Lyou 311 



6«. The type specimen ; anterior view. (Coll. Sidney S. Lyon.) 

 66. Dorsal aspect of the same specimen. 

 6c. Ventral aspect of same. 



DoLATocEiNus ExcAVATUs W. and Sp 321 



7. Inner floor of the ventral disk. (Coll. V. W. Lyon.) 



8. Inner floor of basal disk. 



