PLATE XI. 



Pentagonaster japonicus. 



1G4. Abactiual view, x 1. 



165. Actinal view, x 1. 



!()(). Moiitli-plates. 11 = 74 mm. x 4.5. 



167. Ninth and tenth aclanibnlacral with adjoiniuj^ ventrolateral 



plates. R = 74mm. The left side is the adceutral end. 

 X 7. 



168. Pedicellaria valve from an adanibulacral plate, x DO. 



169. Abactinal plate. R = 74mm. x 8. 



170. Madi'eporite. 11 = 74 mm. Tlie right side is the outer. X 5. 



Pentagonaster arcuatus. 



171. Abactinal vieAv. x 1. 



172. Actinal view, x 1. 



173. Moutli-plates. 11=56 mm. x 5.5. 



174. Third adambulacral plate and the adjoining ventrolateral. R = 



58 mm. The upper side is the adcentral end. x 5.5. 



175. Paxilla from near the madreporite. 11=58 mm. x 7.5. 



176. Paxilla. K = 58mm. x 9. 



177. Madrejwrite. 11 = 56 mm. The upper side is the outer, x 7.5. 



