MONOGRAPH OF THE EXISTING CRINOIDS. 



71 



BRACHIALS 



DIVISION SERIES- 



DORSAL POLE 



CIRRUS SOCKETS 



III Br (TERTIBRACHS) 



I Br, ^FIRST PRIMIBRACM 

 I Brj {PRIMIBRACHIAL AXILLARY) 



II Br (SECUNDIBRACHS) 

 I Br (PRIMIBRACHS) 

 CENTRO-DORSAL 



OBLIQUE MUSCULAR ARTICULATIONS 



SVNARTHRIES 



< Br, (PRIMIBRACHIAL AXILLA 

 I Br, (FIRST PRIMIBRACH) 



,SVZYQIES 

 STRAIGHT MUSCULAR ARTICULATIONS 



FIG. 30. 



MUSCULAR FOSS E 

 SEPTUM 

 INTERARTICULAR LIGAMENT FOSSAE 



CENTRAL CANAI 

 TRANSVERSE RIDQ 



LIOAMENT PIT 

 DORSAL LIGAMENT FOSSA 

 FlG. 31. 



. LONorrvDiNAL RIOOC 



^CENTRAL CANAL 



FlO. 33. 



MUSCULAR FOSS/C 



SEPTUJ 

 INTERARTICULAR LIOAMENT MISS 1 



CENTRAL CANAL 

 TRANSVERSE RIOOI 



UQAMENT PI' 

 DORSAL LIOAMENT FOSSA 

 FlO. 32. 



RADIAL RIDQE3 



CENTRAL CANAL 

 FlO. 34. 



FIGS. 29-34. 29, DIAGRAM OF THE CENTRAL STRUCTURES AXPARM BASES OF A SPECIMEN OF A SPECIES or COMANIITCS nrrn THE 



CrRRI REMOVED (DRAWING BY THE AUTHOR). 30, THE CENTRAL STRUCTURES AND PART OF A POSTRADIAL SERIES OF A SPECI- 

 MEN OF THAUMATOMETRA TENUIS FROM THE WESTERN PART OF THE SEA OF JAPAN (DRAWING v THE ACTUOR). 31, DIA- 

 GRAM OF A STRAIGHT MUSCULAR ARTICULATION (DRAWING BY THE AUTHOR). 32, DIAGRAM OF AN OBLIQUE MUSCULAR 

 ARTICULATION (DRAWING BY THE AUTHOR). M, IMAGRAM OF A SYNARTHRY (DRAWLNG BY THE AUTHOR). 34, DIAGRAM OF 

 A SYZYGY (DRAWING BY THE AUTHOR). 



