MONOGRAPH OF THE EXISTING CRINOIDS. 



199 



Fio. 128. A SPECIMEN OF PROISOCRHJUS BUBERKIMUS FROM THE rHitirpixr. ISLANDS, SHOWING THE DISTAL PORTION OF 



THE COLUMN, THOUGH NOT THE END (a), THE CENTRAL PORTION OF THE COLUMN (6), AND THE PROXIMAL PORTION OF THE 

 COLUMN AND THE CROWN (C). 



