Erklärung der Tafeln. 



Tafel 1. 

 1. Spondylus gaederopus. — 2. Sp. aculeatus. — 3. 4. Sp. foliaceus. 



Tafel 2. 



1. 2. 4. Spondylus gaederopus. — 3. Sp. ramosus. — 5 — 7. Sp. albus. 



Tafel 3. 



1. 2. Spondylus ducalis. — 3—6. Plicatula sp. — 7. Spondylus variegatus. — 

 8. 9. Sp. spathuliferus. 



Tafel 4. 

 1. Spondylus croceus. — 2. Sp. variegatus. — 3. 4. Sp. nicobaricus. — 5. Sp. america- 

 nus. — 6. 7. Sp. longitudinalis. — 8. Sp. aculeatus. 



Tafel 5. 

 1. Spondylus regius. — 2. 3. Sp. foliaceus. 



Tafel 6. 



1. 2. Spondylus pictorum. — 3. 4. Sp. Gussoneaaua. — 5. 6. Sp. nudus. — 7. Pec- 

 ten imbricatus. — 8. P. sauciatus. 



Tafel 7. 



1. 2. Spondylus americanus. — 3. Pecten hyalinus. — 4. P. succineus. — 5. P. Testae. 

 — 6. 7. P. natans. — 8—11. P. flexuosus. 



Tafel 8. 



1. 2. Spondylus spathuliferus. 



Tafel 8a. 



1 — 3. Spondylus spathuliferus. 



Tafel 9 

 1. Spondylus imperialis. — 2. 3. Sp. nicobaricus. — 4. Sp. ocellatus. — 5. Sp. 

 castus. 



Tafel 10. 



1. 2. Spondylus fragilis. — 3. Sp. multisetosus. — 4. Sp. candidus. — 5. Sp. pa- 

 cificus. 



