CRINOIDEA 21 



of ca. 270 mm. and an arm length of ca. 30 mm. Its bathymetrical 

 distribution is ca. 1350-2800 m. 



Fig. 9. Ilycrinus Carpenter L About natural size. (After Danielssen.) 



[Monachocrinus A. H. Clark.] 



Of this genus (characters, see key) three species are known 

 from the N.E. Atlantic, and may be expected to occur also in the 

 British seas. These are : Monachocrinus sexradiatus A. H. Clark, 



