NATURAL SCIENCES OF PHILADELPHIA. 233 



10. P. rugifera, Carpenter, Philad. Proc. 57. 1865. 



Sts. of Fuca. 



11. P. striatissima, Sowb. Zool. Proc. 317, t. 32, f. 7. 1865. 



Borneo. 



12. P. suBLiEVis, Carpenter, Mazat. Cat. 112. 1857. 



Mazatlan. 



13. P. triangularis, A. Adams, Zool. Proc. 47. 1856. 



Indian Ocean. 



Genus MONTACUTA, Turton. 

 Conch. Diet. 102. 1819. 



1. M. chalcedonica, Carpenter, Mazat. Cat. 531. 1857. 



Mazatlan. 



2. M. convexa, Gould, Bost. Proc. viii. 35. 1861. 



Shnon's Bay. 



3. M. Coquimbensis, Hanley, Zool. Proc. 340. 1856. 



Coquimbo. 



4. M. Dion/EA, Carpenter, Mazat. Cat. iii. 1857. 



Mazatlan. 



5. M. divaricata, Gould, Bost. Proc. viii. 88. 1861. 



Hakodadi. 



6. M. elliptica, Carpenter, Mazat. Cat. 113. 1857. 



Mazatlan 



7. M. Gouldi, Thomson, Am. Journ. Conch, iii. 33. 1867. 



New Bedford, Mass. 



8. M. obtusa, Carpenter, Zool. Proc. 270. 1865. 



Mazatlan. 



9. M. subquadrata, Carpenter, Mazat. Cat. 113. 1857. 



Mazatlan. 



10. M. substriata, Mont. Test. Brit. Suppl. 25. 



Forbes & Hanley, Brit. Moll. ii. 77, 1. 18, f. 8, 8a, pi. 0, f. 2. 

 M. spatangi, Brusina, Contrib. 99. 



Norway to Mediterranean. 



11. M. transversa, Forbes, Rep. ^Egean Invert. 192. 



Crete and More a. 



12. M.tumidula, Jeffreys, Ann. & Mag. Nat. Hist, xviii. 396. 1866. 



Hebrides 

 16 



