Xcvitiiui Iiitissimii, Brod. 



Pan:;ma. 



Xeritiiici picta, Shi/. 



Panama. ! 



C'erithium fanieliciim, C. B. Ad.\ 



A*;ftpulco. i 



(/cnthium iiiacniosum, Kicn, \ 



Panama. I 



('eiitkiiim .sterciis-miiscaruin, | 



Panama. [ VolJi 



t 



Vertiigus gemmatiis, Hds, \ 



Acapulco. 



Cei-ithidea Montaguei, D'Orb. \ 



Panama. | 



Cerithidca pnlchra, C. B. Ad. \ 



Panama. \ 



1 



(Viithicle^a varicosa, &by, \ 



Panama. [ 



i 



C'eritiiidea Mazatlaiiica, Cpr. \ 



<Tulf of CaUfornia- i 



j 



Littorina aspera, Phil. \ 



Nicaragua. j 



\ 



iiitt<niiia conspersa, Phd. I 



Nicaragua. i 



Littorina varia, Shtj, 



Panama, j 



t 



Littorina fasciata. Grotj. j 



Panama, 



i 



Litf'.rina pulchra, Phd. 



Panama, 



Modulus catenulatus, Phil. 



Gulf of California. 



^lodulus disculus, Phd. 



Gnlf of California. 



Planaxis planicostata, 8hi/. 



Panama, 



Radius variabilis, C. B. Ad, 



GuJf of California. 



Cypraea exanthema, Linn, 



Panama. 



Cypra?a arabicula, Lam. 



Gulf of California. 



Cyprasa pimctulata, Gray, 



Panama. 



Cypr^a Sowerbyi, Kien, 



Gulf of California, 



Cyprsea albuginosa, Mawe. 



Gulf of California. 



Trivia paciiica. Gray. 



Gulf of California. 



Trivia sanguinea, Gray. 



Gnlf of California. 



Trivia Solandri, Gray. 



Gulf of CaUfornia. 



Strombus gracilior, Shy. 



Gulf of California. 



Str.mibns granulatus, Sivains. 



Gulf of California. 



Conns princeps, Linn. 



Gulf of Califoniia. 



fel52M) 



