PLATE XXXVIII. 
Figs. 1-3. ASTROPECTEN ACANTHIFER, 0. sp. 
. 1. A portion of the abactinal surface ; magnified 15 diameters. 
. 2. Mouth-plates ; magnified 6 diameters. 
Adambulacral and infero-marginal plates ; magnified 7 diameters. 
ws) 
[For macroscopic figures of this species see P]. XXXIV. figs. 1, 2. | 
Figs. 4—6, ASTROPECTEN IMBELLIS, 0. sp. 
. 4. A portion of the abactinal surface; magnified 25 diameters. 
5. Mouth-plates ; magnified 15 diameters. 
. 6. Adambulacral and infero-marginal plates; magnified 17 diameters. 
[For macroscopic figures of this species see Pl. XXXIV. figs. 3, 4. | 
Figs. 7-9. ASTROPECTEN MESACTUS, 0. sp. 
. 7. A portion of the abactinal surface ; magnified 20 diameters. 
8. Mouth-plates ; magnified 12 diameters. 
. 9. Adambulacral and infero-marginal plates; magnified 10 diameters. 
[For macroscopic figures of this species see P]. XXXIV. figs. 5, 6.] 
Figs. 10-12. AsTROPECTEN PONTOPORAUS, n. sp. 
. 10. A portion of the abactinal surface ; magnified 15 diameters. 
. 11. Mouth-plates; magnified 6 diameters, 
. 12, Adambulacral and infero-marginal plates; magnified 8 diameters. 
[For macroscopic figures of this species see P]. XXXV. figs. 1, 2.] 
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