ASTEROIDEA OF NORTH PACIFIC AND ADJACEKT WATERS FISHER. .'397 



Fig. 3. Di/ta.itrr ffilherli; paxillip frcim noar lia."o of ray, aiijarcnt to mar>;inal iilatM, iihowing pcdiccl- 

 lariro, X 20. 3n. Same; fifth ntlamhularral plate and an ii^olulfii furrow spine from side 

 to show bend; adoral side of plate to left, X 6. 

 4. Eremicaster tencbrariut; second to fourth adambulacral plates, X 10; Rpecimen without gupero- 

 marginal spines, from Southern Alask.i, station 2859. 4(i. Same; second to fourth adam- 

 bulacral plate.o, type, X 10. 



Fig. 1. Luidia asthenosoma; tenth adambulacral plate, and maipnal, X 10. 



2. Luidia ludwigi; superomar^inal paxillie with pedicellaria> and upper end of inferomarjjinal 



plates showing pedieellariie, from near base of ray of type, X 12. 2a. Same; adambulacral, 

 actinal intermediate plates (int) and portion of iuferomarginal plate (inf) showing actinal 

 pedicellaria, X 10. 



3. Luidia foliolata; adambulacral plate (seventeenth) and an actinal intermediate plate int: bottom 



of figure is adoral, X 5. 



4. Benlhopecten claviger; third adainbtilacral and first marginal plates, showing also four actinal 



intermediate plates; bottom of figure adoral. 



5. Benlhopecten acanlhonotiu; fourth adambulacral and second paired inferomarginal, X 8. Int, 



actinal intermediate plate, with spines forming part of pedicellaria; bottom of figure is 

 adoral. 



6. Bmthopecten mutabilis; seventh adambulacral and fifth infcromaiginal, X 8. 6a. Same; primary 



basal spine and neighboring abactinal plates, typical. X 6. 



Plate Hb. 



Fig. 1. Xearchatter aciculosus; a primary plate on radial area of disk surrounded by smaller plates, 

 type, X 10. la. Same; mouth plates, specimens from station4402, X 5. 16. Same; ninth 

 and tenth adambulacral plates, adoral side to right. X 8. 



2. Nearchasler iiariabxlis; largo specimen, station 3330; two primary plates from midradial region, 



base of ray; a smaller secondarj' plate and three papuUe, X 10. 2a. Same; tenth adam- 

 bulacral pla^e, type, X 10; ad, adoral side of plate. 



3. Luidiaster dausoni: a primary and several secondary plates from near center of disk, X 10- 



3a. Same; ninth adambulacral plate, specimen from station 4791, X 8; od, adoral side of 

 plate. 



4. Pectinaster agastiH evoplus; abactinal plates from interradii between inner ends of two papularia 



showing pedicellaria-, enlarged. 4a. Same; adambulacral and iiifcromarginal plates show- 

 ing pedicellariip and si>ines, X 8; a, accessory marginal spinules; int, actinal intermediate 

 plate. 



Plate 56. 



Fig. 1. Benlhopecten claviger; abactinal spine from base of ray of typo, X 0. la. Same; end of spine, 

 enlarged. 16. Same; abactinal plates at base of my, X 8; r-r, radial lino. 



2. Benlhopecten acanthonotux; abactinal plates from hai»e of ray, X 8; r-r, radial line. 



3. Xearchaslrr aciculotui; station 4353; abactinal plates showing the primary (pr) and secondary 



(s) and interspersed papular pores; r-r, radial line, X 8. 



4. Xearchaster vnriabilis: station 3330; abactinal plates from radial region, base of ray, X 8. 



5. Luuiiaj(«-</au'soni,- abactinal plates; r-r, radial line; pr, primary radial plate; p, papula?, X 8. 



6. Odontaatrr rrasmu: tenth, eleventh, and twelfth a<iambulacral plates, X 10. 



7. Demunterias imbricala; fo>ir adambulacral plates cleared of ti.-wuo, seen from above, the spinca 



bent backward; a, furrow spines; 6, actinal spines, which are always immors«>d in tiflsue. 



8. Ailerina miniata; an actinal intennediate plate fmm near nmulh plate showir\g serrate !«car 



(dotted), X G. 8a. Same; abactinal plates from injiije; median radial row in middle 

 (stippled), X 4. 



