BATOCRINUS SAMPSONI, 11. sp. 



Plain T, Fi(]. 2, azijuous view of a specimen comjiressed so (is io 



show calyx ami arms; Fi<j- 3, hiieral view of another 



specimen havivg part of ihe arms removed, showing 



raidf, ])r()hoscis and Ihe incurring pari of ihe 



arms, some of which are broken off. 



Species mcclivm size. Calyx obconoidal, twice as wide as 

 high; each radial series where unworn bears a slight angular 

 ridte from the basal plates to the free arms; interradial areas 

 ilattencd but very little; surface granular; truncated for a small 

 column. 



Basals form an hexagonal disc, one-half wider than the diame- 

 ter of the column, and having a height less than the distance 



from the column to the nuirgin. First pi'imary radials wider 

 than high, up|.er face slightly arcuate for the reception of the 

 second radials. Second primary radials quadrangular, about 

 twice as wide as high. Third primary radials pentagonal, a little 

 larger than the second, not quite twice as wide as high, axillary, 

 and support upon the upper sloping sides the .secondary radials 

 The distal side of each third primaiy radial, adjoining the 

 azygous area, bears four secondai-y radials. the last of which 

 is axillary, and supports upon each upper slojiing side a free 

 arm; the proximal side of each bears two secondary radials, 

 the last of which is axillary and supjjorts upon the distal side 

 two tertiary radials, the last one being axillary and supiioi't- 

 ing ujon each ujiper slojung side a free aim; th.e proximal side 

 of each secondaiy radial bears three tertiary radials that sup- 

 port a single arm. This arrrngement gives to each of these 

 rays five aims. In each lateral ray there are two secondary 

 radials, the last one being axillary and sujiporting the tertiary 

 radials. In one of these each distal series supjiorts four ter- 

 tiary radials, the last one being axillary and su])porting upon 

 each upper sloping side a free aim. and each proximal .series 

 supi:orts thiee teitiaiy radials, the last of which supports a 

 free arm which gives to this lateral ray six aims. In tlie 

 other lateral ray, one of the distal series sujiports three tertiary 

 radials, the last one being axillaiy and supporting upon each 

 upper .sloping side a free arm: the other distal series and each 

 proximal series, su]>port thiei' tertiary radials each fjf which 



