FORAMINIFERA OF THE ATLANTIC OCEAN. 



35 



free. Heron-Allen and Earland' say that the "protoplasm extrudes 

 through tlie fine pores of the cement and fmictions of digestion are 

 carried on outside of the test." If tliis is true, what happens in such 

 forms as this and Critldonina . where there is no large aperture when 

 the nuclear divisions occur and the macrospheric young or zoospores 

 of the microspheric form are produced ? Are these produced outside 

 the test or does the test resorb a portion of its cemented wall and 

 break down I Some such occurrence must take place at this time. 



I'sammosphaem fiisca — material examined. 



Cat. 

 No. 



9769 

 9914 

 9770 

 9771 

 9772 

 977.3 

 9774 

 9775 

 9776 

 9403 

 9780 

 9404 

 9405 

 9406 



9407 

 9408 

 9409 

 9410 

 9411 

 9412 

 9413 

 9414 

 9915 



9922 

 9415 



Coll. of— 



No. of 

 ' speci- 

 ! mpns. 



Station. 



U.S.N. M. 

 U.S.N.M.i. 

 U.S.N.M. 

 U.S.N.M.I 

 U.S.N.M.' 

 U.S.N.M. 

 U.S.N.M. 

 U.S.N.M.; 

 U.S.N.M.! 

 U.S.N.M.I 

 U.S.N.M. 

 U.S.N.M.! 

 U.S.N.M.i 

 U.S.N.M.I 

 I 

 U.S.N.M.I 

 U.S.N.M.I 

 U.S.N.M. I 

 U.S.N.M.i 

 U.S.N.M. 

 U.S.N.M. 

 U.S.N.M. 

 U.S.N.M. 

 U.S.N.M. 



U.S.N.M. 

 U.S.N.M. 



10+ I D2243.. 



I 

 10+ 

 10+ 



1 

 1 

 2 

 10 

 1 

 3 

 2 

 1 



D224; 



D22G4.... 



D2:n4.... 



D2531 .... 



D2547.... 



D2r,52.... 



D2.572.... 



D2.i81....i 



D2.582.... 



02697.... 



1)2706.... 



Speedwell 



75 



219 



Goldseeker 



Luealitv. 



Depth 



in 

 fath- 

 oms. 



40 02 49 N.: 



41 43 00 N.; 



39 42 SO N.; 

 35 49 30 N.; 



37 59 30 N.; 



38 15 00 N.; 



39 49 30 N.; 

 39 34 15 N.; 



39 47 20 N.: 

 .38 29 00 N.; 



40 10 15 N.; 

 40 03 00 N.; 

 37 07 50 N.: 

 32 43 00 N.; 



68 49 (X) W. 

 65 21 50 W. 



71 01 20 \V. 

 74 34 45 W. 

 73 48 40 W. 



72 03 00 W. 



70 26 00 \\'. 



71 n 15 W. 



69 34 15 W. 



73 09 00 W. 



70 26 00 W. 

 69 57 00 W. 



74 .34 20 W. 

 77 51 00 W. 



40 42 00 N.; 60 

 39 54 30 N.; 70 



39 47 07 N.; 70 



40 29 00 N.; 66 

 39 43 on N.; 71 

 39 38 00 N.; 70 

 32 40 00 N.; 76 



41 28 30 N.; 65 

 Sandwich Point 



lax Harbor. 



42 .30 00 N.; 70 

 61 03 00 N.; 2 



33 00 W. 

 20 00 W. 

 35 00 W. 

 04 00 W. 



34 00 \V. 

 22 00 W. 

 40 30 W. 



35 30 W. 

 oir Hali- 



33 00 W. 

 20 00 W. 



407 



1,309 



1,000 



843 



444 



1,.594 



000 



705 



924 



965 



63 



78 



167 



1.59 



S53 

 390 

 721 



1,769 

 394 



1,004 

 782 



1, INS 



32 

 l,418ni 



Bot- 

 tom 

 tem- 

 pera- 

 ture. 



Character of 

 bottom. 



Abimdunce. 



40 

 40 

 39 

 39 

 39.5 



'39.' 7' 

 38.9 

 38.1 

 .36.8 

 ,52. 4 

 51.9 

 46.8 

 47.4 



34.4 

 39.6 

 39.6 

 37.8 



bii. m 



m. & st 



s. m 



m. fnc. s 



gn. m 



gy. m 



gu. m. s 



gi\. m. s 



gy- m 



gy-oz 



gn. m 



gy. m. s 



gy- s 



ens. s. bk. sp. 

 brk. sh. 



gy. m 



gh. m 



gy. oz 



gy. oz 



gn. m 



gn. m. .s 



it. gy. oz 



gy. oz. for... 



Rare. 



Rare. 



Rare. 



Rare. 



Rare. 



Few. 



Few. 



Few. 



Rare. 



Rare. 



Common. 



Rare. 



Common. 



Common. 



Rare. 

 Rare. 

 Rare. 

 Few. 

 Rare. 

 Few. 

 Few. 

 Rare. 

 Rare. 



Rare. 

 Rare. 



PSAMMOSPHAERA PARVA Flint. 



Plate 12, figs. 4-(i. 



Psammosphacm pana Flint, Rep. U. S. Nat. Mus., 1897 (1809 1, p. 268, pi. 9, 

 fig. 1.— Rhumbler, Arch. Prot., vol. 3, 1903, p. 242, fig. 77 (in text).— 

 C'usHJiAN. 13ull. 71, U. S. Nat. Mus.. pt. 1, 1910, p. 36, figs. 29, 30 (in text). 



Pmmmosphaera fusca (part) H. B. Brady, Rep. Voy. Challenger, Zoology, vol. 9, 

 1884. p. 250, pi. 18, figs. 2-4 (not 1. 5-8).— Heron-Alt.en and Eartand, 

 .Tourn. Quekett Micr. Olnb. ser. 2. vol. 10, 1909, pi. 35, fig. 13. 



I'Kamninsphaera fusca Schulze, var. purva Heron-Ai.i.en and Eari.and. Journ. 

 Roy. Micr. Soc, 1913, p. 17, pi. 2, figs. 7, 8. 



Descnption. — Test free, usually with a single long acerose sponge 

 spicule incorporated in the tost, which is small, rounded, single 

 chambered; wall of sand grains lirmly cemented by a reddis]i-l)rown 

 cement; aperture indelinite. probably |)i<)vi(!ed for })y fine inter- 

 stitial openings between tho sand grain-;. 



Diameter, usually between 0,30 ami 0.7.) mm. 



.Tourn. Ror. Micr. Soc, 1913, p. 16, etc. 



