CRINOIDEA 



By D. Dilwyn John, M.Sc. 



Department of Zoology, British Museum (Natural History) 

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



INTRODUCTION 



THE 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 Comanthiis novaezealandiae, are from New 

 Zealand. 



The following is a complete list of the unstalked crinoids known from the shallower 

 waters of Antarctic seas. The names of the two of which no specimens were secured 

 are included in brackets. The number of specimens taken of each of the others is shown. 



Family ANTEDONIDAE 



Subfamily HELIOMETRINAE 



Promachocrimis kergiielensis Carpenter 163 specimens 



Florometra mawsoni A. H. Clark 8 „ 



Florometra antarctica n.sp. 3 „ 



Anthometra adriatii (Bell) 14 ,, 

 {Solanometra antarctica (Carpenter)) 



Subfamily ZENOMETRINAE 



Eumorphometra aurora n.sp. i ,, 



Emnorpfiometra fraseri n.sp. 1 ,, 



Eumorphometra marri n.sp. i ,, 

 {Eumorphometra concinna A. H. Clark) 



Kempometra grisea n.g. and sp. 2 ,, 



Subfamily BATHYMETRINAE 



Phrixometra longipinna var. antarctica n.var. 5 ,, 



Phrixometra nutrix (Mortensen) i „ 



Phrixometra rayneri n.sp. i „ 



Subfamily ISOMETRINAE 



Isometra vivipara Mortensen 55 ,, 



Isometra Jlavescens n.sp. 12 ,, 



Isometra graminea n.sp. 8 ,, 



Isojnetrahordea n.sp. 12 ,, 



Family NOTOCRINIDAE 



Notocrinus virilis Mortensen 26 ,, 



Notocrinus mortenseni n.sp. 10 ,, 



