JAPANESE ASTEKOIDEA. 379 



pleting the armature of the X3late. The fun'ow series have a decidedly palmo- 

 radiate axjpearance, and the spines of the external series have a tendency 

 to inchne at a slight angle towards the next adjacent adambnlacral plate. 



" The actinal interradial areas are comparatively small and are ornamented 

 with shoi-t papilliform gi-anules, which appear to be arranged rather widely 

 apart round the the margins of the jplates; sometimes one or more papillse 

 are present in the middle of tliis circlet, and occasionally one is slightly larger 

 than the rest. Consequent on tliis an-angement the individual plates are more 

 or less defined, but are not distinct ; the spinulation is by no means crowded. 



"The pair of mouth-i^lates form a subelliptical or widely fusiform out- 

 line. Each plate bears a straight line of about ten short papilliform spine- 

 lets running parallel to the median sutm-e, and a similar number on the 

 opposite margin of the plate which consequently form a curved series; one 

 or two additional spinelets may be present on the intermediate area of the 

 jDlate. The marginal spines are about equal in length to the adambnlacral 

 spines, but are rather more robust. 



" Colom^ in alcohol, a yellowish ashy grey. 



" Locality. — Station 49. Off the coast of the United States, south of 

 HaKfax, Nova Scotia. May 20, 1873. Lat. 43° 3' 0" N., long. 63^ 39' 0" W. 

 Depth 85 fathoms. Gravel and stones. Bottom temperatm-e 35°.0 Fahr. ; 

 sm'face temperature 40°.5 Fain'. 



" BemarJcs.— This, species is allied in many respects to PseudarcJiaster 

 tesseUahis. The rays, however, are more tapering, the abactinal area is less 

 inflated, the paxillse though smaller are composed of more numerous spine- 

 lets, the marginal border formed by the superomarginal x^lates is broader, 

 the covering of the inferomarginal plates is more squamiform, and the de- 

 finite single line of pointed spinelets wliich occm*s in F semlar chaster tessella- 

 tus is not present. There is no large ]prominent spine on the outer pai-t of 

 the adambnlacral armatm'e as in the South- African species." 



This species is mentioned imder the name of ArcMster parelii hj Gkieg 

 [ '89, p. 3], Brunchoest [ '91, p. 30] and Herdiman [ '92, p. 89]. 



Bell gives the following description of this starfish imder the name of 

 Flutonaster parelii [ '92, p. 63] : 



