PLATE LXI. 



Page 

 Steganockinus sculptus (Hall) 583 



Fig. la. Posterior view of a large specimen with arms, anal tube, and stem. 

 lb. Lateral view of a very large calyx. 

 Ic. Posterior view of another calyx. 

 Id. Young specimen with arms and column. 



le. Portion of one of the tubular appendages, showing the bases of the arms (^). 

 ]/. Cross-section of the same (f). 



Steganoceinus aeaneolus M. and W 681 



2a. Dorsal aspect of a specimen with arms. 



21). Lateral view of the calyx, and the lower end of the anal tube. 



Steganoceinus pentagonus (Hall) 579 



3a. Ventral aspect of a specimen, showing portions of the arms. 



3i. Anterior view of a large calyx. 



3c. Ventral aspect of the same specimen. 



3d. Distal face of the first distichal (enlarged). 



3e. Posterior view of a smaller specimen with more regularly arranged covering 



pieces. 

 4a. Posterior view of a specimen from New Mexico. " 

 45. Ventral aspect of the same specimen. 



Steganoceinus concinnus (Shumard) 582 



5a. Lateral view of the calyx. 



5b. Ventral aspect of a small specimen. 



Steganoceinus globosus W. and Sp 585 



6. Lateral view of the type specimen. 



(All specimens in the collection of Wachsmuth and Springer.) 



