390 Mr. W. K. Fisher oti 



b'. Snperomarginal spines very slender, ap- 



pressed ; no adradial spines ; ten cariual 



plates correspond to fourteen adradial 



and fourteen superomarpinal plates ; 



fourth or lowest actinolateral series 



extending far along ray ; plates of first 



two actinolateral series as broad as 



iuferoniarginals ; adradial plates broadly 



overlapped by adjacent series ophhirus, Fisher. 



6'. Superoniarginal sj)ines more robust, often 



bristling ; an incomplete series of ad- 

 radial spines ; ten carinal plates corre- 

 spond to nineteen adradial and nineteen 



superomargiual plates ; fourth or lowest 



actinolateral series short (one-sixth 



length of ray) ; plates of first actino- 

 lateral series, only, as broad as the 



inferomarginals ; adradial plates exposed 



(about 50 per cent, broader than in 



ophiurus) adiriocles, sp. n. 



a^. With three series of actinolateral plates; the 



• two dorso-lateral and the iutermarginal 



series of papular areas with two to four 



papulae, the areas rather large ; all spines 



rather long and bristling. 



b'. No large pedicellaria regularly on the 



second spine of the prominent or carinate 



adambulaeral plates evermmini, Fisher. 



J*. A large pedicellaria regulai'ly present on 



the second spine (from fuiTow) of the 



prominent or carinate adambulacral 



plates mordax, subsp. n. 



Zoi'oaster actinocles, sp. n. 



Eays 5. R = 161 mm., r=ll mm., R = 14*67' ; breadtli 

 of rs'.y at base, 13 mm. E-ays slender, evenly tapered to tlie 

 extremity, whicli is capped by a relatively large terminal 

 plate; disk elevated at centre ; carinal ridge rather prominent. 

 Resembling a slender-rayed Z.fulgens, but differing in having 

 the plates of the second, third, and fourth actinolateral series 

 smaller, the fourth series being rudimentary; in having 

 slenderer superoniarginal spines (wliich are decidedly slen- 

 derer than the cariual spines), fleshier spinelets, relatively 

 larger carinal plates, never but one actinolateral spine to 

 a plate ; in having a decidedly larger terminal plate, and a 

 large pedicellaria on the second (from furrow) adambulacral 

 spine. The papular pores are small ; there are five regular 

 longitudinal series, with the beginning of a sixth at base of 

 ray, on either side of the carinal plates — namely, two dorso- 

 lateral, one iutermarginal, 2-i-l incomplete actinolateral 

 series. Papulie solitary and small. Carinate or prominent 



