I'r.ATE 3S. 



Fig. 1. Pcr.scijJioiKi.stt r siiliimsis. i\\ir: sevoiitli ami pari of eighth inferomargi- 

 iials, witli adjacent adiiial iiiternunliatf and ailanihiilaci'al i)lat»^s, X 

 C.."i. 1(1. Same; sjiiiielet from inner edye .)f inferomaruinal plate. X 

 abiint 4N. Mi. Same; spinelet from ouler part of plate, X 4(t. 1c. 

 Same: moulli plates, X (i.r>. Iil. Same; iiaxillae and pedieellaiMae from 

 liase of va.v. X Ki; licil., iiedicellariae. If. Same; paxilla, from side. 

 X ](•). V. rjf). 



2. l'(r.s(i)lK)ii(i-stcr ocdiijhi.r. tyjie; sixth inforomar.i;inal plate ami atl.ja<'ent 



acfiiial iiitei'iiiediate [nil.) and adainl)ulacral ])lates, X 0.r> ; jxd., pedi- 

 eellaria. 'In. Same; thirleenlli sniieromar^inal and niipei' end of 

 adjacent infentniar^inal plate, X (>..l. 'Ih. Same; fonr paxillae from 

 radiu.s, base of I'a.v ; one shows a pedireilaiMan apparatus, X 1(1. 'Ic. 

 Same: inferomarginal spinelet from outei- ]iarl of plate. X 52. 2r7. 

 Same; inferomarii'inal sjunelet from near inner ('(l-c of i)late, X 52. 

 V. 127. 



3. A)itliof<fi(t( iiiiloiilioni. tyiie; ahactinal plates Irom coelomic side, X 8. 



The irrejiiilar plates on the i-i;:hl are in the median radial re.uion of 

 the ray, and those to the left are in rei;ular lransver.se series, ]). 140. 



585 



