Crinoidea. 325 



this name in the "Challenger" report and subsequently is not the species 

 represented by the type. 



Explanation of Figures. 



Plate IV. 



Fig. 1. Camatulella braehiolata (Lamarck) frora aboral surface. 



Fig. 2. „ „ „ from oral surface. 



Fig. 3. Dichrometra gyges (Bell) with 57 arms distributed among 7 rays, from oral 



surface. 

 Fig. 4. Petasometra helianthotdes A. H. Clark, type-specimen from aboral surface. 

 Fig. 5. „ „ A. H. Clark, type-specimen from oral surface. 



Note: The figures are nearly of natural size, figs. 1^4 reduced to about ^'/,2, 

 fig. 5 a little more reduced. 



