- lOp - 



beaded radial ribs, whieh are especially prominent on the posterior 

 slope. 



The Santo Doningian form v;hich Ga'-^b described as Barbatia 

 bonaezyi apparently is candiga . although one of his two types 

 has sculpture that is finer than usual" and both have a less sharp 

 posterior rid e and therefore a less excavated posterior slope 

 than the average candi da . As mentioned above in "tiie discussion 

 of A. umbonata , Gabb's Josta Pdoan Pliocene material under the 

 name of inforicata includes some forms which should be referred to 

 candi'-la . 



Occurrence .- Oligocene.- Chipolaraarl, Florida (Dall, 1898) 

 Santo -Domingo (Gabb, 1875). lo\-er lliocene: " Bo?/den becls, 

 Bowden, Jamaica (Dall, 1898). Pliocene.- limon, Oosta Hica 

 (Gabb, 1881). Trinidad (Ball, 1898). Pleistocene.- The Antilles 

 generally (Dall, 1898). Recent.- Katteras to southern Brazil 

 in less than 50 fathoms. 



