Plate 1.5 



Fig. 1. Myxoderma sacculatum. A small portion of abactinal surface, base of ray XS, to illustrate 

 specimen with very fleshy spines and interspersed papulae (/'i and pedicellariae; C, 

 earinal spines; .1, adradials; S, superomarginals; /, inferomarginals; X, smaller 

 spinelets. In. Skeleton at base of ray; carinals at top if), adradials (A), marginals 

 (S, I), actinolaterals (1-4); station !."> 40, ■ 5. lb. Three adambulacral plates of a 

 topotype from proximal third of ray; alcoholic specimen to show sacculate spines. 

 The subambulacral spines <>f nonprominen! plate are nol shaded; X10. \c. Station 

 1540; a dried adambulacral plate near base of ray, X10. 



'_'. Myxoderma platyacardhum rhomaleum. Two earinal spines, ■ 15. 2a. Abactinal pedi- 

 cellariae and spinelet, X15. 



3. Myxoderma plaiyacanthum, station 4321. Carina! spine, two views of an abactinal pedi- 

 cellaria and spinelet, X 15. 

 17(1 



