JAPANESE ASTEEOroEA. 43 



a small ceutral couical spinelet suiToiiuded by a few minute miliaiy thorulets 

 oui}'. There are three complex pedicellariau apparatus in each area, situated 

 iu the lateral sutures which separate the two innermost intermediate or 

 ventral plates ; these organs consist of an oval cavity equally scooped out of 

 the margins of the Uyo adjacent plates, each margin beset with about five 

 short, compressed, pointed ' dog-tooth ' slia])ed spiuelets, directed over the 

 cavity, and frequently turn(Hl upwards into the same. The major axis of the 

 cavity measures about 1 mm. There art=! also structures which I take to be 

 very minute j)ßdicellari8e present on a number of the adambulacral plates, 

 appearing to protrude through the membrane, usually on the outer part 

 of the adorai margin. 



" The anal aperture is suljcentral and distinct, its margin l>eing sur- 

 rounded by a close circlet of small spiuelets longer tluxii the small spinula- 

 tiou of the paxillœ. At a little distance from the aperture is a circlet of 

 the large armed x>f^xilla% standing more or less regularly iu the radial and 

 iuterradial lines. 



" The papula?, though confined to the base of each ray, occupy a much 

 greater area than in the other members of the genus, and are probalDly not 

 comprised in a specially constituted x)apularium. The}' are small and widely 

 spaced, more than fifty may be counted in each area, and isolated ones 

 extend as far as the fouiih marginal plate. 



" The madreporiform body, which is small, circular, and convex, is 

 situated close to the marginal plates, and its surface is striated Avith rather 

 fine convoluted furrows. One of the large powerfully spined paxilla? stands 

 on its adcentral side. 



" Colom' in alcohol, a bleached ashy white. 



" ioca%.— Station 232. South of Yeddo (Japan). May 12, 187Ö. Lat. 

 85^ 11' 0" N., long. 139^ 28' 0" E. Depth 345 fathoms. Green mud. 

 Bottom temperature 41^.1 Fahr. ; surface temperatm'e 64^.2 Fahr. 



" Bemarl's. — This is, perliaps, the handsomest species in the genus, at 

 any rate the most striking, and is at the same time remarkably well 

 characterised. Without refemng to minor points of difiereuce, it will suffice 

 to say that the form is at once distinguished from all others by the gi'oup 



