Bulletin ^q 



440 



the lowest being barren. 



The angle of dip diminishes very considerably between this 

 point and Los Quemados. It is here such a slight northerly dip 

 as not be apparent except when viewed from some distance. 



List of Species 



Bullaria paupercula Sby. 

 Terebra cirrus Dall. 

 Conus consobrinus Sby. , 

 Conus granozonatoides, n. sp. 

 Conus tortuosostriatus Toula. 

 Conus marginatus Sby. 

 Conus Bonaczyi Gabb. 

 Drillia islalindse, 11. sp. 

 Clava plebeia Sby. 

 Aphera islacolonis, n. sp. 

 Oliva cylindrica Sby. 

 Oliva brevispira Gabb. 

 Olivella muticoides Gabb. 

 Marginella bispaniolana, n. sp. 

 Fasciolaria semistriata Sby. 

 Metulella yeunsta Sby. 

 Strombina pseudohaitensis 



gurabensis, n. var. 

 Phalium moniliferum Gpy. 

 Malea camnra Gpy. 

 Cyprsea Henekeni Sby. 

 Strombxis baitensis Sby. 

 Strombina Nuestrasenorae. n.sp. 

 Natica Youngi, p.. sp. 



Natica sulcata Born. 



Amauropsis Guppyi Gabb. 



Amauropsis Guppjn gurabensis, n. var. 



Sinum gatunense Toula. . 



Turbo dominicensis Laloi, n. var. 



Calliostoma Grabaui, 11. sp. 



Dentaliutn dissimile Gpy. 



D. dissirnile ponderosum Gabb. 



Cadulus denticulus-tigris, n. sp. 



Leda peltella Dall. 



Scapharca golfoyaquensis, n. sp. 



Scapharca insequilateralis Gpy. 



Giycimeris jamaicensis Dall. 



Venericardia scabricostata Gpy. 



Divaricella prevaricata Gpy. 



Cardium haitense Sby. 



Cardium serratum Linne. 



Protocardia gurabica, n. sp. 



Pitaria acuticostata Gabb. 



Pitaria planivieta Gpy. 



Chione Wcodwardi Gpy. 



Chione Hendersoni Dall. 



Tellina Waylandvaughani, n. sp. 



Scissula scitula Dall. 



Affinities of the Zone G Fauna. — Of the above 50 per cent 

 occur at Bowden, 44 in Zone I, 32 in Bluff 3, 21 in Zone H, 10 

 in F, 6 in A, 4 in B. The reciprocal percentages are : 14 to Zone 

 I, 4 to Bowden, 2.9 to Zone H, 1.9 to F, .7 to A> .2 to B. G's 

 only strong bond is to Zone I. 



Geology of the Rio Cana 



Sections were obtained on the lower part of Rio Cana at 

 Cana and along the middle course of the river at Caimito. See 



