UnstalLed Crinoid from Christinas hhubd. GJ:5 



the two segments preceding the penultimate are sqnaiish to 

 one-third broader than long ; the outer segments (beyond 

 the transition segment) are very liighly polished and bear 

 small dorsal tubercles. 



The ten arms are about 90 mm. long ; the elements of the 

 IBr series appear in external view to be united by syzygy, 

 and are well separated laterally ; tiie arms resemble those of 

 Comissia lutkeni ; the brachials overlap rather strongly. 

 The distal intersyzygial interval is usually three oblique 

 muscular articulations. 



Pi to />4 provided with combs; p^ is about 12 mm. long, 

 and has a comb with about twenty-five exceptionally long 

 teeth; the comb of j\ has fitteen or sixteen teeth, beyond 

 which extends a toothless tip ; only nine segments of p^ are 

 not supplied with teeth. 



Hah. Christmas Island ; the type is in the British 

 Museum. 



The other known species of the genus Comissia are : — 



Comissia ignota, A. 11. Clark: Amirante Islands; 17 

 fathoms. 



Comissia i^^fegrina (Bell) : Macclesfield Bank ; 55-60 

 fathoms. 



Comissia liltJceni, A. H. Clark : Philippine Islands; 

 49-71: fathoms. 



Comissia dumetum, A. H. Clark : Philippine Islands ; 

 58 fathoms. 



Comissia hispida, A. H. Clark: Philip])ine I.-^lands ; 51 

 fathoms. 



Comissia liorridus, A. H. Clark : Philippine Islands ; 58 

 fathoms. 



Comissia scitulus, A. H. Clark: Philippine Islands; 58 

 fathoms. 



Comissia sp. (figured, as a ten-armed specimen of Coman- 

 thus parvicirra, in Chadwick, ' Rep. Ceylon Pearl Oyster 

 Fisheries,' Part ii., Su[)plementary Report xi., plate, fig. 13) : 

 Ceylon; about 100 fathoms. 



