Batissa, Gray. 



1. B. sphaericula Prime 



2. B. Keraudrenia Deshayes,. 



3. B. insignis Deshayes.. 



4. B. triquetra Deshayes.. 



6. B. Childrenae Deshayes.. 



6. B. lentieularis Deshayes.. 



7. B. tenebrosa Deshayes.. 



8. B. violacea Deshayes.. 



9. B. obesa Deshayes . 



10. B. unioniformis Prime 



11. B. siniilis Prime 



12. B. ponderosa Prime 



13. B. solidula Prime 



14. B. elegans Prime 



, Java. 

 . Waigiou. 



Philippines. 

 .Philippines. 



ex auct. (fide Cuming.) 

 • Philippines. 



ex auct. (fide Cuming.) 

 .Philippines. 

 . Philippines. 

 . Fejec Islands. 

 .New Guinea. 



Fejee Islands. 

 . Fejee Islands, 

 .Fejee Islands. 

 . Nicobar. 

 . New Caledonia, 



? 



Cyrena, Lamarck. 



AMERICAN SPECIES. 



1. Oyr, Caroliniensis Lamarck Georgia. 



2. Cyr. Floridana Conrad Tampa Bay, Florida. 



ex auct. 



3. Cyr. olivacea Carpenter..:. .Mazatlan, Mexico. 



ex anct. 



4. Cyr. Mexicana Sowerby Mazatlan, Mexico. 



Panama. 

 4. a. Cyr. aequilateralis Desk. . Mazatlan, Mexico. 



4. b. Cyr. fragilis, Desk Mazatlan, Mexico. 



5. Cyr. insignis Deshayes California. 



6. Cyr. maritima C. B. Adams. Panama. 



ex auct. 



T. Cyr, radiata Hanley Reallejos, Nicaragua. 



ex auct. 



8. Cyr. solida Philippi Central America. 



Balize. 



9. Cyr. regalis Prime Central America ? 



10. Cyr. colorata Prime New Providence, 



Bahamas. 



11. Cyr. acuta Prime.. Central America. 



12. Cyr. fortis Prime . .Equador. 



13. Cyr. aretata Deshayes Maracaibo. 



ex auct. 



