FORAMINIFERA OF THE ATLANTIC OCEAN. 



27 



D2144 in the Caribbean, off Panama, and D2150, in the Caribbean, 

 off Yucatan. Flint records specimens from the northern part of the 

 Gulf of Mexico and in the Caribbean, west of the Leeward Islands. 

 Brady's Atlantic Challenger records, except for one off the western 

 coast of Africa, are all within this same faimal region, off the coast 

 of Brazil, off the West Indies, and off Bermuda. There are numer- 

 ous records for the species about the coast of the British Isles. From 

 the large number of records and the different forms figured it is quite 

 probable that a closer study of the hispid forms of Lagena will show 

 definite species or varieties with definite geographical limits. 

 Lagena hispida — material examined. 



LAGENA IOTA, new species. / 



Plate 4, figs. 9-11. 



Description. — Test somewhat pyriform, about one and one-half 

 times as long as broad, somewhat compressed, base bluntly pointed, 

 apertural end somewhat drawn out, basal portion with an elongate 

 curved thickening at each side of the periphery, not connecting with 

 one another at the base ; wall of the test smooth, but the central por- 

 tion usually clouded with numerous minute thickenings; aperture 

 with a slight entosolenian tube. 



Length 0,50 mm. 



Distribution. — Type-specimens (U.S.N.M. Cat. No. 19083) from 

 Albatross station D2041, in 1,608 fathoms (2,940 meters), off the 

 northeastern coast of the United States. I have failed to find this 

 species elsewhere in the Albatross dredgings. 



Lagena iota — material examined. 



