442 



PROCEEDINGS OF THE \.\Tln\ | /. \irsi;r\l. 



vol. 38. 



AMMOSPHAEROIDINA GRANDIS, new species. 



Description. Test large, globular, in adults usually made up of 



three visible chambers, one large one and 

 two smaller ones on the opposite side; 

 wall coarsely arenaceous, but with a fairly 

 smooth exterior; aperture at the base of 

 the largest chamber crescentic or semicir- 

 cular, nearly opposite the suture marking 

 the juncture of the walls of the two 

 smaller chambers; color, grayish-brown. 

 Diameter, up to 3 mm. 

 Type-specimen- Cat. No. 8209, 

 U.S.N.M., from Albatross station 5236, 

 off the eastern coast of Mindanao; 494 

 fathoms. 

 This species differs from the allied A. 

 sphao-oirftnifon/iis (H. B. Brady i in its much larger size, more regular 

 form, and smooth surface. It was abundant at the above station. 



Fios. 17-19.— AM MOSPH A EROIDINA 



grandis. x v From photograph. 



FlGURESAT I PPEB RIGH1 \M> BELOW 

 ARE APERT1 RAL Ml H . 



