304 DISCOVERY REPORTS 



Fig. M 



1. Diplasteriasoctoradiata, St. MS 6- ahactinalpedicdhna, 0-^3 mm., x loo. la. Profile of 2 jaws, x lOO. 

 lb. A straight pedicellaria, 1-27 mm., x 50. ic. Forma e«no/a, profile of i pedicellaria jaw. 



2. Diplasterias meridionalis, St. MS 10, abactinal pedicellaria, 0-37 mm., x 100. 2a. Marginal pedicellaria, 

 0-52 mm., X 100. zb. A straight pedicellaria in profile, and inner face of i jaw. i-02 mm., x 50. 



3. Diplasterias radiata, 2 abactinal spinelets, 0-85 mm., x 50. 3 a. Jaw of a crossed pedicellaria, X200; 

 length range 0-27-0-3 mm. 36. Valve of a straight pedicellaria, x 100. 



4. Luidia heterozona, 2 inferomarginal plates, proximal third of ray, to show different armature of alternate 

 plates; base of ray is to left, x 10. a, abactinal paxilla; ap, actinal pedicellaria, s, superomarginal, fused to 

 upper end of inferomarginal. 4a. A single mouth-plate seen slightly from side, x 10. a, apical spine; «, 

 nerve;/), pedicellariae mentioned in text. 46. Abactinal paxilla of second longiseries, dried, x 30. 4c. Disk 

 paxilla, alcoholic specimen, x 30. 



5. Luidia aciadata. Two inferomarginal plates near base of ray to show different position of spines on 

 alternate plates, x 10. Two superomarginal paxillae {s-s) are also shown. 



