T 



CRINOIDEA 



By D. Dilwyn John, m.Sc. 



Department of Zoology, British Museum (Natural History) 

 (Plates III-VI ; Text-figs. 1-24) 



INTRODUCTION 



HE Discovery collection of crinoids is entirely of comatulids; no stalked form was 

 taken. It was made between the years 1935 and 1937. There are three hundred 

 and twenty-six specimens of which by far the greater number come from depths of 

 between 100 and 600 m. Two hundred and sixty-nine are from the Antarctic region, the 

 majority from the South American sector, a small number from the Ross Sea. Fifty-four 

 are from the Burdwood Bank and the Patagonian shelf; they are of one species, Isometra 

 vivipara, common to that region and the Antarctic. 



The remaining three specimens, of Comanthus novae zealmidiae, are from New 



ERRATA 



DISCOVERY REPORTS, VOL. XVIII 



p. 126, footnote: for pp. 40-1 read pp. 44-5 



p. 153, eighth line from bottom: 



for each syzygial pair read syzygial pairs 



p. 201, fifth line: for fig. 90 read fig. 920 



I 



Phrixometra longipinna var. antarctica n.var. 5 



Phrixometra nutrix (Mortensen) i 



Phrixometra rayneri n.sp. i 



Subfamily ISOMETRINAE 



Isometra vivipara Mortensen 55 



Isometra flavescens n.sp. 12 



Isometra graminea n.sp. 8 



Isometra hordea n.sp. 12 



Family NOTOCRINIDAE 



Notocrimis virilis Mortensen 26 



Notocrimis mortenseni n.sp. 10 



