Plate XV. 



i, 2, 5, 8, 13, 19—21, 29, 37, 40, 43, 52 Acropsis rosirata. 6, 12, 27, 34 A. fnlva. 10, 14, 15, 22, 25, 32, 36, 39, 41, 51 

 Accslc belltdifera. 9, 16—18, 24, 26, 30, 31, 35, 3S, 44, 45, 47, 48, 50 Hcmiasler expeigitus. 42, 46 II. gibbosus. 3, 7, 11 i.H«. zonatus 



4, 33, 49 H. tenuis. 23, 28 «.H.-a florigerus. 



Fig. i. Aeropsis rostrata, rostrate pedicellaria. s°L. 



— 2. — valve of tridentate pedicellaria. 5<y i# 



— 3. i.IIniiiastcr zonatus (Challenger', St. 126), valve of globiferous pedicellaria; side view. (Com p. 



Fig. 7)- 5 %- 



— 4. Hemiaster tenuis, valve of tridentate pedicellaria. $°/i. 



— 5. Acropsis rostrata, frontal tnbe-foot. '"/j. 



— 6. — fulva (« Challenger*, St. 191), valve of tridentate pedicellaria. 5 / : . 



— 7. 'iHcmiasteri> sonatas (« Challenger », St. 126), valve of globiferous pedicellaria, from the inside. 



(Comp. Fig. 3). so/p 



— 8. Aeropsis rosirata, valve of tridentate pedicellaria. 5°/j. 



— 9. Hemiaster expergitus, rostrate pedicellaria. 5°/j. 



- 10. Aceste bellidifera, rosette plate, proximal part, in side view. 1 vj 1 . (Comp. Fig. 39). 



— 11. « Hemiaster* zonatus, valve of rostrate pedicellaria. 7<y i# 



— 12. Aeropsis fulva (« Challenger ■•>, St. 191), valve of small tridentate pedicellaria. I2 5/ t . 



— 13. — rostrata, valve of rostrate pedicellaria. 7°/j. 



— 14. Aceste bellidifera, — - globiferous — 5°/ r . 



— 15. — — — rostrate — 5%. 



— 16. Hemiaster expergitus, valve of rostrate pedicellaria. 5%. 



— 17. — — - small tridentate pedicellaria. I2 S/j. 



— 18. — — — - rostrate pedicellaria. 5%. 



— 19. Acropsis rostrata, rosette plate, outer end, from below. 5°/j. 



— 20. — — — proximal end, from below. I2 5/ x . 



— 3i. — valve of tridentate pedicellaria. 5°/^ 



— 22. Aceste bellidifera, — - — — 5°/j. 



— ■ 23. « Hemiaster * florigerus (type specimen), valve of tridentate pedicellaria. I2 5/ lm 



— 24. Hemiaster expergitus (Talisman ), valve of globiferous pedicellaria. so/j, 



— 25. Aceste bellidifera, valve of tridentate pedicellaria. 5%. 



— 26. Hemiaster expergitus, valve of tridentate pedicellaria. I2 5/ t . 



— 27. Aeropsis fulva (« Challenger ■■>, St. 191), valve of tridentate pedicellaria. ?%. 



— 28. <s.Hemiastcn> florigerus (type specimen), spicule from tube-foot. '75/j. 



— 29. Aeropsis rosirata, valve of small tridentate pedicellaria. 7 / : . 



— 30. Hemiaster expergitus, valve of small tridentate pedicellaria. t2 S/ I . 



— 31. — — — - ophicephalous — I2 s/i. 



— 32. Aceste bellidifera, — - rostrate — so^. 



— 33. Hemiaster tenuis, — - globiferous — 5°/ x . 



— 34. Aeropsis fulva (^Albatross., St. 3393), valve of rostrate pedicellaria. ■•; ,. 



— 35. Hemiaster expergitus, valve of triphyllous pedicellaria. '75/j. 



— 36. Aceste bellidifera, valve of small tridentate (? rostrate) pedicellaria. I2 5/j. 



— 37. Aeropsis rostrata, — - triphyllous pedicellaria. I2 5/i- 



— 38. Hemiaster expergitus, spicule from tube-foot. '75/^ 



— 39. Aceste bellidifera, rosette plate, inner part, from below. (Comp. Fig. 10). 1 ^°/ 1 . 



— 40 a. b. Aeropsis rostrata, spicules from tube-foot. 7°/,. 



— 41. Aceste bellidifera, spicule from tube-foot. '+%. 



— 42. Hemiaster gibbosus, tridentate pedicellaria. 7°/j. 



— 43. Aeropsis rostrata, miliary spine, with ampulla*, so/j. 



— 44. Hemiaster expergitus, primary spine, from the anterior end of the test, side view. 35/j. 



— 45. — — small tridentate pedicellaria. 7°/ x . 



— 46. — gibbosus, valve of globiferous pedicellaria. 5°/,. 



— 47. expergitus, globiferous pedicellaria. 5°/j. 



— 48. — — valve of globiferous pedicellaria. 5°/^ 



— 49. tenuis, small tridentate pedicellaria; (the skin dark coloured). 5°/j. 



— 50. — expergitus, primary spine, from the actinal plastron. 35/ I# 



— 51. Aceste bellidifera, valve of tridentate pedicellaria. "S/ r . 



— 52. Aeropsis rostrata, tridentate pedicellaria. 37/j. 



