86 



BULLETIN 82, UNITED STATES NATIONAL MUSEUM. 



169 



172 



FIGS. 163-172. FIGURES ILLUSTRATING ARM STBOCTUHE OF COMATULIDS. 163. DORSAL VIEW OF 

 SPECIMEN OF COMATULA PECTINATA FROM SINGAPORE, SHOWING DIFFERENCE IN LENGTH OF THE ARMS. 



164. CENTRODOESAL AND ARM BASES OF SPECIMEN OF HELIOMETIIA MAXIMA WITH TWELVE ARMS. 



165. RADIAL, DIVISION SERIES AND ARM BASES OF PTILOMETRA MULLERI. 166. SAME, WITH HOMOLOGIES 

 OF OSSICLES SHOWN. 167. IBR SERIES AND PROXIMAL BRACHIAI.S OF TROPIOMETRA AFRA, WITH 

 HOMOLOGIES OF OSSICLES INDICATED (SEE FIG. 116). 168. PROXIMAL PORTION OF AN ARM PAIR OF 

 HYPALOCRINUS NARESIANUS, WITH HOMOLOGIES OF OSSICLES INDICATED. 169. IBR AXILLARY, DIVISION 

 SERIES AND FROxIMAL PRACHIALS OF COMANTHERI A ALTERXANS. 170. SAME, WITH IIuMOLOGIES OF 

 OSSICLES INDICATED. 171. RADIAL, DIVISION SERIES AND PROXIMAL BRAC'HIAI.S 1>F CVM.'.NTlirS BEN- 

 NETTI. 172. SAME, WITH HOMOLOGIES OF OSSICLES INDICATED. 



