Memoirs of the Museum of Comparative Zoӧlogy, at Harvard College, Cambridge, Mass . s pedieellaria with \alves open. X 70. IS. Triphvllous pedieellaria. X 70. 10. ^alve of tridentate pedieellaria. X 70. 20. Small tridentate pedieellaria. X 70. 21, 22. Clypeaster lamprus II. L. Clark. 21. Small tridentate pedieellaria. X 70. 22. Valve of large tridentate pedieellaria. X 70. 23. Clypeaster humilis (Leske). 23. Interior view of loop of large valve of ophicephalous pedieellaria. X 70. 24. Clypeaster audouini Fourtau. 24. Valve of triphyllous pedieellaria. X 300. 25-27. Clypeaster rotundus (A. Ag.)


Memoirs of the Museum of Comparative Zoӧlogy, at Harvard College, Cambridge, Mass . s pedieellaria with \alves open. X 70. IS. Triphvllous pedieellaria. X 70. 10. ^alve of tridentate pedieellaria. X 70. 20. Small tridentate pedieellaria. X 70. 21, 22. Clypeaster lamprus II. L. Clark. 21. Small tridentate pedieellaria. X 70. 22. Valve of large tridentate pedieellaria. X 70. 23. Clypeaster humilis (Leske). 23. Interior view of loop of large valve of ophicephalous pedieellaria. X 70. 24. Clypeaster audouini Fourtau. 24. Valve of triphyllous pedieellaria. X 300. 25-27. Clypeaster rotundus (A. Ag.). 25. Valve of triphyllous pedicellaria. X 300. 26. Side view of valve of small tridentate pedicellaria. X 300. 27. Valve of tridentate pedicellaria. X 70. 28-31. Clypeaster virescens Dod. 28. Blade of valve of ophicephalous pedicellaria. X 70. 29. Large tridentate pedicellaria. X 70. 30. Interior view of loop of valve of ophicephalous pedicellaria. X 70. 31. Interior view of loop of large valve of ophicephalous pedicellaria. X 70. ALBATROSSTACinC AMD HAWAIIAN ECHINI. Plate HlXlalkdd. PLATE 124. Plate , 2. Clypeaster lytopetalus A. Ag. & CI. 1. Tridentiite pediccllaria. X 70. 2. Valve of tridentate pedicellaria. X 70. 3-6. Clypeaster reticulatus (L.). 3. ^alve of tridentate pediccllaria of specimen from Reunion. X 70. 4. \alve of tridentate pediccllaria of specimen from Mauritius. X 70. 5. ^alve of tridentate pediccllaria of young specimen from Hawaii. X 70. 6. ^alve of tridentate pedicellaria of adult specimen from Hawaii. X 70. 7-12. Laganum depressum Agass. S9 10,1112 \alve of tridentate pedicellaria. X 70. Side view of valve of tridentate pedicellaria. X 70. Blade of valve of ophieephalous pedicellaria. X 350. Exterior view of loop of valve a of ophieephalous pedicellaria. X 350. Exterior view of loop of valve b of ophieephalous pedicellaria. X 350. Exterior \iew of loop of valve r of ophieephalous pedicellaria. X 350. 13-H). Laganum fudsiyama Dod. 13. Top of st


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