314 s. goto: 



tabulum, sliglitlj raised and faintly convex in tlie radial regions, where the 

 I)axiUa3 are widely spaced. The tabiilmn is covered with coarse, low, and 

 almost truncate grannies, and the margin is smTonnded by a series of thin 

 laraellifonn papilla) or flattened gi'anules, which hart) a striking appearance 

 as compared with other species (see PI. XLIX. fig. 1). A small excavate 

 pedicellaria with two rather broad jaws and associated x^it is j)i'esent on 

 some of the tabnla, and appeai-s to be always x)l^ced at the margin of the 

 tabulum, some of the neighboming granules being scooped away as it were 

 for its reception. 



" The supero-marginal plates, which are seventeen in number, counting 

 from the median inten-adial line to the extremity, form a well-defined and 

 nearly uniformly broad border to the abactinal area. Tlie plates near the 

 inteiTadial Hne have their length and breadth subequal, the length being 

 perhaps shghtly in excess ; as they proceed along the ray, however, the 

 length diminishes step by step, until at the extremity the breadth is fully 

 twice as great as the length. The j)lates are distinctly tumid. The lateral 

 sui-facc of the plates is covered with very small, iTuiform, crowded granules, 

 but on the abactinal area of the plate there is a large naked quadrangular 

 space wliich occupies nearly the whole of that sm-face, being separated from 

 the margin only by two (or rarely three) rows of the small granules. The 

 majority of the plates bear one, or occasionally two, small pedicellarifB 

 placed at the edge of the naked space. 



" The infero-marginal plates correspond to the superior series, and are, 

 like them, covered with small crowded granules, excepting, however, a small 

 circular area on the actinal surface of each plate, which is naked. Nearly 

 all the infero-marginal j^lates bear one of the small excavate pedicellarite 

 similar to those on the supero-marginal plates ; a few plates bear two. The 

 pedicellariae appear to be invariably placed close to one of the margins of 

 the plate. 



" The adambulaci-al plates are slightly broader than long, and ':heir 

 armatm*e consists of a marginal Series of six short, subequal spinelets, ex- 

 cepting the adorai spine of the series, wliich is smaller. The spinelets are 

 thick and subprismatic or quadrangular in section, and liave a roimdly 



