240 s. GOTO. 



gi-oup of about 40 or 45 short, terete, often clavate, round-tipped spinelets ; 

 of these about one-half form a peripheral series and are a trifle slenderer 

 and longer. On the smaller paxillse the spinelets decrease markedly in size, 

 but only slightly in numljer. 



" Snperomarginal plates, 15 in nmnber from median inten-adial line to 

 exti'emity of ray form an arched bevel to border of abactinal sm'face ; plates 

 shoi-ter than wide, but increase in length on outer half of ray. Plates of 

 l)oth series separated by transverse nan'ow deex) fasciolar grooves and a 

 narrow deep groove (not so deep as transverse gi'ooves) separates snperomar- 

 ginal from inferomarginal series. Snperomarginal plates covered with short, 

 terete, blunt granuliform spinelets, similar to but larger than paxillar spinelets, 

 becoming well-defined slender spinelets in fasciolar gi'ooves. Snperomarginal 

 covering is to be considered as a spinelet rather than granules. 



" Inferomarginal j)lates much wider than long, encroacliing more onto 

 actinal area than do superomaginals onto abactinal, and corresponding in 

 position to superomarginals. Spinelets, densely covering sm-face of plates, 

 larger than those of superomarginals, and increasing in size toward outer 

 end of plate which projects slightly beyond adjacent end of snperomarginal, 

 thus defining the ambitus. Inferomarginal spinelets granuliform in middle 

 of plate, often attaining a squamiform appearance at outer end ; spinelets in 

 fasciolar fmTOws, slender. No enlarged spines of any sort on either marginal 

 series. TeiTainal plate small, granulöse, deeply notched below. 



" Actinal inten-adial areas large ; intermediate plates low-paxiUiform, 

 arranged in chevrons, the series adjacent to adambulacrals extending about 

 three-fom-ths length of ray or to eighth inferomarginal. Plates decrease in 

 size toward margin, are strongly imbricated internally, and the paxillar crowns 

 which are comx^osed of about 25 to 30 clavate obtuse, not very crowded, 

 spinelets (slender when dry) sm-mount a low convex elevation or tabuhun. 



" Adambulacral x)lates about as wide as long, with a slightly roimded, 

 angular fmTow margin, the angularity being more pronounced in vicinit;,' of 

 mouth plates. Annatm-e consists of (1) a fmTOW series of 4 (sometimes 3) 

 terete or sHghtly flattened bluntly x^ointed tapering spinules about as long 

 as plate and gmduated in length orad, the longest spine being on aboral 



