GENERAL INFORMATION ABOUT SPECIES AND ISLANDS
The following 2 books contain some good information:
Marine Shells of the Seychelles Alan Jarret book
The Manual of Living Conidae Röckel, Korn & Kohn
Both are recent and are a good bibliography to start with. Unfortunately these two books offer a different list concerning Seychelles cone shells species. The one from A. Jarret shows 56 species and Röckel, Korn & Kohn one 80.
It should be noted in addition that even if the Marine Shells of the Seychelles is the most recent book, the informations inside were collected a long time ago while Mr Alan Jarret was living there. He started the book but never finished it and it's much later, he decided to publish his huge work. At the time he gathered informations, he had poor informations about deeper species from 20-60m as scuba was not as common as today. And I guess he and his mates did not have the chance to get their hands on all the species there. And that's why there is a huge difference between the books.
But, Seychelles are unique and may not own all the species listed in The Manual of Living Conidae though. I can take the example of Conus textile, Linné 1758. It seems that this species is not present there... Mr Jarret did lot listed it and I never collected this usually very common species... And it shall be present when you read the The Manual of Living Conidae. Meaning the right number is not know yet (and may not be since many more years) but shall be between 60 and 80.
Another important thing : Seychelles islands like French Polynesia are spread over a wide territory (115 islands) meaning that islands can be separated by huge distance. And like French Polynesia, Seychelles Islands may vary a lot depending of the islands you study. The most known and visited (dived) islands are Inner ones (Mahe, Praslin, La Digue, Curieuse, Silhouette, Ile du Nord, Félicité, Marianne, Grande Soeur, Petite Soeur, Cousin, Cousine, Frégate, Aride,...) and they all are made from granite rocks (shown on any local postcards). In the same time you may have coral islands (still Inner Islands) like Denis Island (Far & North of Praslin) and Bird Island.
Much farther, you may reach Outer Islands wich may be Atolls :
- Coetivy Island
- Amirantes Group : Remire, D'Arros, Desroches, Etoile, Boudeuse, Marie-Louise & Desnoeufs
- African Banks : Banc Africain & Ile du Sud
- St.-Joseph Atoll
- Poivre Atoll
- Alphonse & St.-Francois Atolls : Alphonse, Bijoutier & St.-Francois
- Farquar group : Farquar Atoll & Providence Atoll
- Aldabra group ("close" to Madagascar) : Aldabra Atoll (which has many endemic species, like birds, fishes,... maybe seashells, and is a protected Natural Reserve by UNESCO), Cosmoledo Atoll, Astove & Assomption
The farther islands are less visited and seashells there were not that much studied, meaning that some species may only live on these far wild islands and one must reach these quiet spot to try to gat his hands on all species...
Cone shells listed in A. Jarret's Book
Conus ammiralis C. arenatus Conus aureus Conus auricomus C. aulicus C. bandanus
C. betulinus Conus bullatus C. canonicus C. capitaneus C. catus C. chaldeus
C. coronatus C. crocatus C. cylindraceus C. distans C. ebraeus C. episcopatus
C. figulinus C. flavidus C. frigidus C. geographus C. gubernator C. imperialis
C. legatus C. leopardus C. litteratus C. litoglyphus C. lividus C. luteus
C. maldivus C. miles C. miliaris C. mitratus C. moreleti C. namocanus
C. nussatella C. obscurus C. omaria C. parvatus C. pennaceus C. pertusus
C. quercinus C. rattus C. sanguinolentus C. sponsalis nanus C. striatellus C. striatus
C. tenuistriatus C. tessulatus C. tulipa C. varius C. vexillum C. violaceus
C. virgo C. zeylanicus C. zonatus