J75. CONTRIBUTION TO 



species and shows well the spinose character of the appendage. Figure 25 is a 

 portion of another tube with stronger but less numerous spines. 



Figure 26 is the ventral disk of a specimen with half an inch of the anal 

 tube. The spinose character of the plates is shown beautifully and their ar- 

 rangement above the arm bases is the same as in figures 16 and 17. 



Figures 27 and 28 are basal and lateral views of a beautiful dorsal cup of 

 this species. There are but three plates in the anal interradius and the basal 

 rim is very strong. 



Horizon, localit}'" and collection, same as the last. 



