402 s. GOTO : 



Fisher lias recently given ii very detailed description of this species, 

 Ps. pnrelii, and mentions specimens horn the Sea of Japan [ : 11, p. 180] : 



"Diagnosis. — Hays five. 11 = 104 mm. ;*^ r = 37 mm. ; 11 = 2.8 r. Breadth 

 of ray at base, 42 mm. liays well developed and arena tely taparing at 

 base, then very gradually to the blunt exti-emity ; interbrachial arcs vi^ide and 

 refunded ; abactinal area subplane, only a trifle inflated on centre of disk. 

 Abactinal paxillre small, crowded and regular, about two opposite each mar- 

 ginal plate, and with five to seven ploygonal or subprismatic granules sur- 

 rounded by twelve to fifteen slenderer papilliform spinelets on periphery of 

 tabulm. Abactinal plates with five or six prominent lobes. Marginal plates 

 broad with close-set, flat-topped hexagonal granules. Inferomarginals with a 

 transverse row of small appressed, squamiform, pointed spinules. Adam- 

 bulacral plates with five or six strongly compressed fm'row spinelets, and on 

 actinal smiace one or two enlarged spinules smTounded by numerous shorter 

 granuliform spinelets to the number of fifteen to twenty-two, all thick, 

 heavy, and membrane-invested. Mouth plates with median tooth. Actinal 

 interradial areas large ; plates covered with rather crowded, swollen, poly- 

 goiuxl, papilliform unequal granules, those in centre more robust, clavate, 

 with flaring tips. Many plates with a central enlarged spinule. Fasciolar 

 channel or pectinate pedicellarioe between plates adjacent to adambulacrals, 

 these continued toward margin but less conspicuously. Spinelets forming 

 roof of fascioles slender. Superambulacral plates present. 



" Description. — Abactinal paxillas small and crowded fairly regular, 

 largest on proximal radial regions, very crowded and small at ends of r.iys 

 Avhere only the median radial series attains the terminal plates but the two 

 adradial nearly reach it ; one and one-half to two paxillge correspond to each 

 marginal plate. Tlie larger paxilhie liave five to seven x3olygonal or sub- 

 ])rismatic, robust, truncate granules, heavier at tip than at base, and occupy- 

 ing surface of tabulum, while on the periphery are about twelve to fifteen 

 much slenderer papilliform or subprismatic spinelets. The spinelets may ha 

 very compactly placed or form more or less open group. Along the border 



1) " An umisually large specimen for this siiecies, station 3225." 



