PLATE XI. 



Page 

 DiABOLOCEiNUS PEEPLExus TV. aucl Sp 250 



Fig. la. Dorsal view of a large calj-x, showing verj' small supplementary pieces 

 along the sides of the radials and between the interradials. 

 li. Ventral aspect of the same. 



DiABOLocKiNus vESPERALis White 261 



If. Lateral view of a specimen in which no supplementary pieces are developed. 

 Id. Lateral view of a specimen in which the primary interradials are completely 



separated from the radials by supplementary pieces. (All in Coll. W. 



and Sp.) 



Ehaphaxoceinus subnodosus (Walcott) 259 



2. The type specimen. (Mus. Couip. Zool.) 



Ehaphanocrinus sculptus (Miller) 260 



3 A specimen with arms. (Coll. I. H. Harris.) 



Lyriocrinus MELISSA (Hall) 263 



ill. A specimen with arms. (After Hall.) 



ib. Dorsal aspect of a large specimen. (Coll. W. and Sp.) 



4r. Ventral aspect, showing portion of the tegmen. (Coll. W. F. E. Gurley.) 



4(/. A smaller specimen, with the tegmen preserved, and showing the anus. 



(Coll. W. and Sp.) 

 4e. Lateral view of the calyx. (Coll. W. F. E. Gurley.) 

 4/. A young specimen with arras. (Coll. W. and Sp.) 



Ltrioceinus dacttlus Hall 262 



5a and b. The types. (Amer. Mus. Nat. Hist., New York.) 

 5n. Specimen showing the pinnules. (Mus. Comp. Zool.) 



Ehodoceinus Wortheni Hall 220 



6. A slightly crushed specimen with arms. (Mus. Comp. Zool.) 



EnoDOCEiNus NANUS M. and W 228 



7a. The t3'pe specimen, lateral view; from the Burlington Limestone. 

 111. Ventral aspect of the same. (Mus. Comp. Zool.) 



