Figure 1. A 



marginal, AD, adambulacral plates; 10, fron 

 of ray to right. The circles indicate p 

 hi h/. Same, spim 50 



la \ superomargina! 0.9 mm., with a somewhat smaller 



cellaria. 

 16. A carinal, 0.67 nun. 



1,. Irf, li Dorsolateral spines (0.5, 0.49, 0.81 mm., i 

 jusl ab \\ 



trginal, 0.125 « 

 [g. An adambulacral, 0.13 nun. 

 2. Same, mouth plates and adoral carina, 10. Two adamb 



;;. 3a. Same, cr 1 p i lid ! i u 



200 I ! 5. 



pedicellai 

 0.63 

 I. .1 phi la licellaria, 



5. S 



