MONOGRAPH OF THE EXISTING CRINOIDS. 



205 



Fio. 135. 



FIG. 136. 



(J 



FIO. 137. 



FIG. 138. 



FIG. 139. 



FIG. 140. 



FIG. m. 



FIG. 142. 



Fio. 143. 



FIGS. 135-143. 135, COLUMNALS FROM THE CENTER OF TUE COLUMN OF RlHZOCRINUS LOFOTENSIS FROM NORWAY, SHOWING A 

 PRIMITIVE LONG BOURGUETICRINOID TYPE WITH A CENTRAL RAISED ANNULVS. 136, CoLVMN.VLS FROM THE CKNTER OF TUE 



COLUMN OF BYTHOCRINUS INTERMEDIUS 165 MM. IN TOTAL LENGTH FROM THE CULF OF MEXICO, SHOWING LUXG m 



TICRINOrD COLUMNALS WITHOUT A CENTRAL ANNULUS. 137, (.'OLUMNALS FROM THE CENTER OF THE COLUMN OF RlIIZOCRINUS 

 VERRILLI FROM FLORIDA, SHOWING BOURGUETICRINOID COLUMNALS OF MEDIUM LENGTH. 13S, CoLUMSALS Kile iM THE LOWER 

 (DISTAL) PORTION OF THE COLUMN OF THE TYPE OF DEMOCRISUS RAWSoNH FROM BARBADOS. SHOWING VERY SHORT BOL'R- 

 GUETICRINOID COLUMNALS. 139, DIAGRAM ILLUSTRATING TYPICAL BOURGUETICRINOID COLUMNALS; (a) LATERAL YIF.W. ASH 

 (6) THE DISTAL END, SHOWING THE TYPE OF INTERCOLUMNAR ARTICULATION. 1 III. ('( .l.rMNAl> n:ciM Till'. I.c iWf.lt PART dF 

 THE COLUMN OF A SPECIES OF DEMOCRINU3 FROM MONTSERRAT, SHOWING SWOLLEN AND ISF.AH-I.IKK IIOl'RiirF.TICRINolD 

 COLUMNALS. 141, COLUMNALS FROM THE LOWER PART OF THE COLUMN I>F KlH/.ni I'.INI '< VERRILLI FK"M Kl.nRIDA, MKm - 

 ING BOURGUETICRINOID COLUMNALS "WITH SWOLLEN ENDS, APPROACHING THK H1F.YN' n I'.IN'UH TVri , 1 ! J. ("' il.lMN \I.S II: ' 'M 

 THE LOWER PART OF THE COLUMN OF MONACUOCRINUS CARIBBEUS FROM THE AV I I M'.WlXi. I.i.NO BOURGUETI- 



CRINOID COLUMNALS WITH GREATLY SWOLLEN ENDS, APPROACHING THE PHRYNOCRIXnin TYPE. I l:i. I'ART Of THK ' 

 OF A VERY YOUNG ISOCRINUS DECORUS FROM CUBA, SHOWING THE BOURGUETICRINOID COLUMXALS INTERSPERMED WITH 

 NODALS WHICH ARE JOINED TO THE INFRANODALS (JUST BENEATH THEM ) BY SYZYGY. 



