Gonincidaris cnnnliculntn. Al. A(;. Dorsal view of another specinien. 



The radial III of the samo. with tliu itrovisional surker extended from 



under its adoral margin. 



Dorsal view of another specinien, with the dorso-central disk. 



The dorso-central disk. a tliin himina of calcified tissue, the soft 



substanre being removed. 



Dorsal view of another specimen, 1,4.") mm. in diameter, dried. 



Side view of the same, seen from the ambulacrum II. 



Yentral view of the same, showing the inner circle of the five pairs 



of primary ambulacral plates and the seoond of five large, solitary 



interradials and five pair.s of fixed ambulacrals. 



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