MONOGRAPH OF THE EXISTING CBINOIDS. 



263 



FIG 292. 



FlO. 293. 



FIG. 294. 



FIG. 295. 



FIG. 290. 



FlOS. 292-297. 292, VENTRAL VIEW OF THE CENTRODORSAL OF A SPECIMEN OF HELIOMETRA GLACIALIS (AFTER P. H. CARPENTER). 



293, VENTRAL VIEW OF THE CENTRODORSAL OF A SPECIMEN OF HEUOMETRA GLACIAUS (AFTER P. n. CARPENTER). 294, VEN- 

 TRAL VIEW OF THE CONTRODORSAL OF A SPECIMEN OF PROMACHOCRINUS KERGCELENSIS FROM KERGUF.LEN ISLAND (AFTER 



P. H. CARPENTER). 295, VENTRAL VIEW OF THE CONTRODORSAL OF A SPECIMEN OF SOLANOMETRA ANTARCTICA FROM BEARD 

 ISLAND (AFTER P. H. CARPENTER). 296, VENTRAL VIEW OF THE CENTRODORSAL OF A SPECIMEN OF FLOROMETRA PERPLEXA 

 FROM BRITISH COLUMBIA. 297, VENTRAL VIEW OF THE CENTHODOBSAL OF A SPECIMEN OF FLOROMETRA ASPERROIA FROM 

 ALASKA. 



