FORAMINIFERA OF THE ATLANTIC OCEAN. 

 Cassidulina braziliensis — material examined. 



131 



CASSIDIJLINA MEXICANA, new species. 



Plate 24, %. 5. 



Description.— Test elongate, slightly if at all compressed, early 

 portion close-coiled, later portion cylindrical; chambers compara- 

 tively few, inflated, distinct; wall thin and translucent, very finely 

 perforate, smooth; sutures distinct, depressed; aperture elongate, 

 broadly comma-shaped, in a large depressed area; color whitish. 



Length, 0.50-0.65 mm. 



Distribution.— Type-specimen (U.S.N.M. No. 16389) off Bell, Fowey 

 Rocks, Florida, in 22 fathoms (40 meters). A specimen was also 

 found from station H79, Caribbean- Sea, 821 fathoms (1,488 meters)- 



This is somewhat nearer C. hradyi than the preceding species, as 

 its later portion is decidedly uncoiled, but it is not compressed as in 

 C. hradyi. The aperture, too, is in a more sunken area. The figures 

 referred by Goes ^^ to Bulimina squammosa d'Orbigny, var. suhsquam- 

 mosa Egger seem to be very like this species. His material was from 

 the Carribbean. 



His figures are referred to later by Goes himself in 1896'® to C. 

 hradyi. This evidently is a species replacing C. hradyi in the warm 

 waters of the Gulf of Mexico and in the Caribbean area. 



Cassidulina mexicana — material examined. 



•^ Kongl. Svensk. Vet. AKad. Handl., vol. 11*, No. 40, 18^2, pi. 4, figs. 111-113. 

 '« Bull. Mus. Comp. Zool., vol. 29, 1896, p. 49. 



