MONOGRAPH OF THE EXISTING CMNOIDS. 



65 



CENTRAL CANAL 



1.MUSCULAR FOSS/E 

 |NTERARTICULAR LIGAMENT FOSS/E 

 ^TRANSVERSE RIDGE 



\ DORSAL LIGAMENT FOSSA 

 IBASAL RAYS 

 ;RADIAL RIDGES 

 CIRRUS SOCKETS 



INTERRADIAL RIDGES 



DORSAL POLE 



Fio. 9. 



LIGAMENT PIT 



MUSCULAR FOSS-C 



IMI KAKTICLLAR UOAMENT FOSS 

 lEXTRAJ. CASAL 



.TRANSVERSE RIME 



DORSAL UQAME-VT FOSSA 

 :ENTRO-DORSAL 



CIRRUS SOCKETS 



FIO. 10. 



DORSAL LIGAMENT FOSSA, 

 TRANSVERSE RIDOE 

 CENTRAL CANAL 



CENTRO- DORSAL 



m \ MI M prr 

 'MUSCULAR FOSS 



ROSETTE 



BASAL RAYS 



FIG. 11. 



Fid. 1-J. 



\ 



\ 



ENTRAL CAVITY 



FIG. 13. 



1 Br, (FIRST PRIMIBRACH 

 RADIALS 

 BASALS 



SVZYOIES 



^SYNARTHRIES 

 [WATER PORES 



CENTRO-DORSAL 



FIG. 14. 



FIGS. 9-14. 9, LATERAL VIEW OF THE CENTRODORSAL A.XD KADIALS OF A SPF.CIMKN- or STENOMETRA QUINQUE COSTATA FROM 

 THE Kj ISLANDS (ADAPTED FROM P. II. CARPENTER). 10, LATERAL VIEW OF THE CENTRODORSAL AND RADIALS OF A SPECI- 

 MEN OP HlMEROMETRA MARTENSI FROM SINGAPORE (DRAWING II V THE AUTHOR). 1 1 , VENTRAL VIEW OF T1IF. RADIAL PENTA- 

 GON OP A SPECIMEN OP HlMEROMETRA MARTENSI FROM SINGAPORE (DRAWING BY THE AUTHOR). 12, DORSAL VIEW OF THE 

 RADIAL PENTAGON OF A SPECIMEN OF I'TILOMETRA MfLLERI FROM SYDNEY, NEW SOUTH WALES (DRAWING 1IY THE AUTHOR). 



13, VENTRAL VIEW OF THE CENTRODORSAL OF A SPECIMEN OF PEROMETRA DIOMF.PK v. ?\v >M SOUTHERN JAPAN (DRAWING BY 

 THE AUTHOR). II, DIAGRAMMATIC LATERAL VIEW OF THE PROXIMAL PORTION OF A SPECIMEN OK ATELECRINUS CONIFER FROM 

 THE HAWAIIAN ISLANDS (DRAWING BY THE AUTHOR). 



