PLATE XXXVIII. 



Page 

 FigS. 1-3. ASTROPECTEN ACANTH1FER, n. Sp. . . .203 



Fig. 1. A portion of the abactinal surface ; magnified 15 diameters. 



Fig. 2. Mouth-plates ; magnified 6 diameters. 



Fig. 3. Adambulaeral and infero-marginal plates ; magnified 7 diameters. 



[For macroscopic figures of this species see PI. XXX IV. figs. 1,2.] 



Figs. 4-6. ASTROPECTEN IMBELLIS, n. sp. . . .206 



Fig. 4. A portion of the abactinal surface ; magnified 25 diameters. 



Fig. 5. Mouth-plates ; magnified 15 diameters. 



Fig. 6. Adambulaeral and infero-marginal plates ; magnified 17 diameters. 



[For macroscopic figures of this species see PI. XXXIV. figs. 3, 4.] 



Figs. 7-9. ASTROPECTEN MESACTUS, U. sp. . . . 219 



Fig. 7. A portion of the abactinal surface ; magnified 20 diameters. 



Fig. 8. Mouth-plates; magnified 12 diameters. 



Fig. 9. Adambulaeral and infero-marginal plates; magnified 10 diameters. 



[For macroscopic figures of this species see PI. XXXIV. figs. 5, 6.] 



FigS. 10-12. ASTROPECTEN PONTOPORvEUS, n. Sp. . . . 210 



Fig. 10. A portion of the abactinal surface ; magnified 15 diameters. 



Fig. 11. Mouth-plates; magnified 6 diameters. 



Fig. 12. Adambulaeral and infero-marginal plates; magnified 8 diameters. 



[For macroscopic figures of this species see PI. XXXV. figs. 1, 2.] 



