Plate 16. 



Pago. 

 DOLATOCRINUS CORPOROSUS MUler and Gnrley 54 



Fig. 1. A flattened specimen of maximum size; ornamentation somewhat finer 

 than in the type. 



2. A 10-armed variant; being a typical example of the bursiform calyx 



characteristic of the magnificus group, and of the pustulose style of 

 ornament of this species, but having only 10 arms. 



DOLATOCRINUS GREENEI Miller and Gurley 55 



3. A good example of the fine striate ornament attributed to this species; 



owing to some distortion the true contour of the calyx does not appear 

 in this view. 



DOLATOCRINUS BELLULUS MUler and Gurley 56 



4. A typical example of this species, with the strong nodose ornamenta- 



tion. 



5. A 10-armed variant; similar to the last in all essential characters, but 



having 10 arms, and being abnormal in the base. 



6. Basal view of same specimen, having a hexagonal base with a sixth 



plate in line with the radials, like the anal plate of the Actino- 

 crinidae. 



7. A young specimen, for comparison with the next figure. 



DOLATOCRINUS LINEOLATUS MUler and Gurley 55 



8. A yoimg specimen, showing greater relative height of calyx. 



DOLATOCRINUS, species 56 



9. An imperfect specimen, having an extreme development of the central 



nodes. 



All Hamilton: Louisville area. 

 183081—21 7 75 



