32 PROCEEDINGS OF THE ACADEMY OF [Feb., 



OLIGOCENE FOSSILS FROM THE NEIGHBORHOOD OF CARTAGENA, COLOMBIA, 

 WITH NOTES ON SOME HAITIAN SPECIES. 



BY HENRY A. PILSBRY AND AMOS P. BROWN. 



The material described below was collected by Mr. Lloyd B. Smith 

 in 1914, in the course of professional work in the vicinitj^ of Cartagena, 

 chiefly near the so-called "mud volcanoes" and at Cenizas. Most 

 or all of them seem to be from Upper Oligocene beds, about equivalent 

 in age to the Gatun in the Canal Zone. 



A few fossils collected by Mr. Smith in the following year in Haiti 

 are also described. Their chief interest is in adding to the evidence 

 of extensive Oligocene beds south of the main range of the island. 

 The species made known up to this time are not sufficient to fix the 

 position of these beds in the Oligocene series.^ 



When not otherwise specified, the species mentioned are from near 

 Cartagena. 



Conus proteus Hwass. 



A specimen showing fewer color-spots than the recent C. proteus. 



Conus molis B. and P. 

 Conus imitator B. and P. 

 Conus semulator B. and P. 

 Conus gaza P. and J. 



These four species were described from the Gatun bed. 



Tunis cartagenensis n. sp. PI. 5, fig. 1. 



A species grouping with T. henekeni (Sowerby) of Santo Domingo, 

 from which it differs by the greater number and smaller size of 

 longitudinal folds— ten on the last whorl. Form, sculpture and 

 structure of the anal fasciole are as in the Santo Domingan species. 

 Length of the broken shell figured, 36.5 mm. 



Drillia gatunensis Toula. 



Canoellaria dariena Toula. 



Mitra longa Gabb. 



Marginella mediocris n. sp. PI. 5, fig. 2. 



A species related to M. latissima Dall, but differs from the narrowest 

 specimens of that by its much narrower contour. The outline 



1 See also a brief paper by one of us in Proc. Acad. N.\t. Sci. Phila., 1910, 

 p. 487. 



