Blastoidocrinus carchariaedens Billings (sp.) 



Page 97 



Two views of the specimen figured in plates i and 2 , showing different inter- 

 radii ; a few of the sutures marked with ink. 



At a in the lower figure may be seen the edge of a sheet of brachioles which 

 are bent away from the broken wing plate. In the larger photograph 

 this edge shows traces of an inner row of side pieces. At b the deltoid 

 is much worn, as if the plate had been rubbed against some interfering 

 object during growth. The section of the deltoid with its hydrospires 

 and two bounding ambulacra was made at or very close to the dotted line c 



