FORAMINIFERA OF THE ATLANTIC OCEAN. 



63 



CUNEOLINA ANGUSTA Cushman. 



Plate 10, figa. 1-3. 



" Textularia trochus Goes (not d'Orbigny), Kongl. Svensk. Vet. Akad. HaDdl., 

 vol. 19, No. 4, 1882, p. 80, pi. 5, figs. 167-170; pi. 6, figa. 171, 172. 

 CiLneolina pavonina d'Orbigny, var. angusta Cushman, Publ. 291, Carnegie 

 Inst. Wash., 1919, p. 34, pi. 7, fig. 2. 



Description. — Test elongate, triangular, usually twice as long as 

 wide, thence gradually tapering to the subacute apex, compressed, 

 in a plane parallel to that of the junction between the chambers; 

 chambers broader than high, distinct, lab^Tinthic, consisting of 

 numerous chamberlets, those of the exterior smaller and more 

 numerous than those of the inner portion; sutures distinct, very 

 slightly depressed, wall arenaceous, of fine sand grains with an abun- 

 dance of cement forming a very smooth surface; aperture elongate, 

 either a simple fissure, or by contractions forming a series of pores; 

 color grayish-brown. 



Length up to 7 mm. 



Distribution. — The type-specimens were from the Bowden Marl, 

 Jamaica (Miocene) where it was found in the following variety. It 

 has occurred in the region of the West Indies, living oft' the Barbados 

 in 100 fathoms (183 meters), off Key West, Florida, 78 fathoms (143 

 meters), and at Fish Hawk Station 949, off the eastern coast of the 

 United States. 



From a study of the original figures and description of d'Orbigny, 

 it seems that the Cretaceous Cuneolina pavonina d'Orbigny is un- 

 doubtedly different from that which occurs in the Miocene or recent 

 material. That name bemg available for the recent or Tertiary 

 form necessitates the adoption of angusta Cushman as the name for 

 the recent species and the narrow variety already described from 

 Bowden, Jamaica. This leaves the broad form of Bowden which 

 has been referred to as C. pavonina without a name. All the recent 

 material I have seen seems to belong to C. angusta. 



Cuneolina anqusla — material examined. 



