Plate XL 



4, 7—10, 30 Pourtalesia Jeffreysi. 1, 13, 14, 18—20, 23, 34—37, 4°, 41 P- Wandeli. 2, 3, 5, 6, 17, 21, 24, 25, 27—29, 32, 42—44 

 Echinosigra (Pourlalesia) paradoxa. 12, 33 P. laguncula. 11 .P. Tanneri. 31 P. hispida. 15,26 P. rosea. 16,22,38,39 



Helgocystis (Pourlalesia) carinata. 



Fig. i. Pourtalesia Wandeli, rostrate pedicellaria. 7%. 



— 2. Echinosigra (Pourtalesia) paradoxa, valve of tridentate pedicellaria, from the inside. "5/j. 



— 3. — — — — - ophieephalous — I2 5/i- 



— 4. Pourtalesia Jeffreysi, valve of ophieephalous pedicellaria, side view. I2 S/ X . 



— 5. Echinosigra (Pourtalesia) paradoxa, valve of tridentate pedicellaria. "S/i- 



6. — — — — - ophieephalous — side view. I2 5/ : . 



— 7. Pourtalesia Jeffreysi, valve of ophieephalous pedicellaria, from the inside. I2 5/i- 



— 8. — — — - tridentate — '"/i- 



— 9. — — rostrate pedicellaria. 5 %. 



_ 10. — valve of rostrate pedicellaria, from the inside. (Comp. Fig. 30). 7%. 



— n. — Tanneri, — - — — 7 %. 



— 12. — laguncula, — - ophieephalous pedicellaria. I2 5/i- 



— 13. — Wandeli, ophieephalous pedicellaria. i°\ z . 



— 14. — — valve of ophieephalous pedicellaria, side view. I2 5/i- 



— 15. — rosea. — - tridentate — I25 /i- 



— 16. Helgocystis (Pourtalesia) carinata, valve of globiferous pedicellaria, side view. (Comp. Fig. 22). 7°/i- 



— 17. Echinosigra (Pourtalesia) paradoxa, rostrate pedicellaria. 7%. 



— 18. Pourtalesia Wandeli, valve of ophieephalous pedicellaria. Iz 5/i- 



_ ig. _ _ _ . rostrate from the inside. (Comp. Fig. 23.) ?%. 



— 20. — — primary spine, from the inner part of the buccal cavity. (Comp. Fig. 34). 3°/j. 



— 21. Echinosigra (Pourtalesia) paradoxa, primary spine, from the inner part of the buccal cavity. 5°/ : . 



— 22. Helgocystis (Pourtalesia) carinata, valve of globiferous pedicellaria, from the inside. (Comp. 



Fig. 16). to/,. _ . 



— 23. Pourtalesia Wandeli, valve of rostrate pedicellaria;, side view. (Comp. Fig. 19.) 7%. 



— 24. Echinosigra (Pourtalesia) paradoxa, tridentate pedicellaria. 7°/j. 



— 25. — — — sphseridia. I2 5/i- 



— 26. Pourtalesia rosea, ophieephalous pedicellaria. 7 " ,. 



— 27. Echinosigra (Pourtalesia) paradoxa, valve of rostrate pedicellaria, from the iuside. I2 5/j. 



— 28. — — — — - — side view. I2 5/j. 



— 29. — — tridentate pedicellaria. 7°/,. 



— 30. Pourtalesia Jeffreysi, valve of rostrate pedicellaria, side view. (Comp. Fig. 10). 7°/,. 



— 31. — hispida, — - tridentate — " 5 ji- 



— 32. Echinosigra (Pourtalesia) paradoxa, ophieephalous pedicellaria. 7°/,. 



— 33. Pourtalesia laguncula, valve of tridentate pedicellaria. 7°/,. 



— 34. — Wandeli, primary spine, from the invagination, nearer the edge. (Comp. Fig. 20). 



— 35. Pourtalesia Wandeli, — from the actinal plastron. l8 / [ . 



36. — the point of a primary abaetinal spine. 



3°/ 



/I- 



— 37. — miliary spine, front view. (Comp. Fig. 41). I2 5/ : . 



— 38. Helgocystis (Pourtalesia) carinata, miliary spine. +%. 



— 39. — — valve of rostrate pedicellaria. 70/,. 



— 40. Pourtalesia Wandeli, tridentate pedicellaria. I2 S/i. 



- 41. miliary spine, side view. (Comp. Fig. 2,7)- I25 A- 



— 42. Echinosigra (Pourtalesia) paradoxa, clavula. 7°/^ 



— 43. — — miliary spine. I2 5/ x . 



— 44. — — primary abaetinal spine. 35/j. 



