EORAMINIFERA OF THE MXANTIC OCEAN. 



21 



Journ. Roy. Micr. Soc, 1916, p. 44. — Mestayer, Trans. New Zealand 

 Inst., vol. 48, 1916, p. 129.— Chapman, Brit. Ant. Exped., Geology, 

 vol. 2, 1916-1917, p. 66, pi. 4, fig. 25.— Cushman, Proc. U. S. Nat. Mus., 

 vol. 56, 1919, p. 607; Bull. 100, U. S. Nat. Mus., vol. 4, 1921, p. 173. 



Entosolenia globosa Williamson, Ann. Mag. Nat. Hist., ser. 2, vol. 1, 1848, 

 p. 16, pi. 2, figs. 13, 14; Rec. Foram. Great Britain, 1858, p. 8, pi. 1, 

 figs. 15, 16.— Dawson, Can. Nat., vol. 4, 1859, p. 28, figs. 4, 5; vol. 6, 

 1872, p. 254, pi. 3, fig. 2. 



Lagena sulcata (Walker and Jacob), var. (Entosolenia) globosa Parker 

 and Jones, Philos. Trans., vol. 155, 1865, p. 348, pi. 13, figs. 37 a, b; 

 pi. 16, figs. 10 a, h. 



Description. — Test subspherical, smooth ; aperture either stellate 

 or a fissure with an entosolenian neck; wall thin, usually trans- 

 parent, but sometimes thicker and nearly opaque, w^hite. 



Length up to 0.50 mm. 



Distribution. — Specimens of typical Lageiia glohosa seem to be 

 rare in the western Atlantic. I have had but a few specimens, and 

 the stations are widely scattered from off the northeastern coast of 

 the United States to the Caribbean. There are numerous records for 

 the species, as the above synonymy shows. Specimens seem to be 

 most common in fairly deep water, although about the British Isles 

 the species seems to occur at moderate depths. It is a question 

 whether or not a single species is really represented by all these 

 specimens recorded. According to the descriptions, the apertural 

 characters are very variable, a thing which does not usually occur, 

 even in Lagena. It is also to be suspected that some of the forms 

 referred to this species are really the initial chamber or proloculum 

 of Polymorphina or other multilocular genera of the Lagenidae. 



A varietal form with a much larger test and thicker walls occurs 

 at a few stations. 



Lagena glohosa — material examined. 



