80 BULLETIN 104, UNITED STATES NATIONAL MUSEUM. 



Trochammina globigerini/ormin — matrrinl exam incd. 



Station. 



D23S1. 

 I)?35'3 

 P?385. 

 T)2525. 

 n 2,542. 

 U 25.50. 

 1)2.552. 

 D2562. 

 D25ri4. 

 1J2568. 

 D25-0 

 i D2573. 

 D2079. 

 P2n82. 

 1)2705. 

 D2708. 

 P2710. 

 D2701. 

 H47... 



Locality. 



28 05 00 N. 

 28 32 00 N. 

 28 51 00 N. 



41 49 00 N. 

 40 00 15 N. 

 39 44 30 N.; 

 :« 47 07 N.; 

 ;» 15 30 N.; 

 39 22 00 N.: 

 .39 15 00 N.: 



39 54 00 N.; 



40 34 18 N.: 

 32 40 00 N.; 



39 38 00 N.: 



42 47 00 N.; 



41 28 30 N.; 



40 06 00 N.; 

 15 39 00 S.; 

 17 46 30 N.; 



; 87 56 15 AV. 



; 88 00 00 \V. 

 ; 88 18 00 W. 

 : 05 49 30 \V. 

 ; 70 42 20 W . 

 ; 70 30 45 \V . 

 ; 70 35 00 W . 

 ; 71 25 00 W. 

 : 71 23 30 W. 

 : 68 OS 00 w . 

 ; 67 05 SOW. 

 : 66 09 00 W . 

 ; 76 40 30 W. 

 ; 70 22 00 W. 

 ; 61 04 00 W. 



65 35 30 W . 



P8 01 30 W . 



38 32 .54 W. 



65 10 25 W. 



Depth 



in 

 fath- 

 oms. 



H48 17 42 00 N.; 65 12 40 W.. 



1,330 

 1,181 



730 

 72 



129 

 1,081 



721 

 1,434 

 1,390 

 1, 781 

 1,813 

 1,742 



782 

 1,004 

 1,255 

 1,188 



984 



818 

 1,482 



978 



Bot- 

 tom 

 tem- 

 pera- 

 ture. 



°F. 



'39.'8' 

 40.1 

 43.6 

 47.2 

 38. 5 

 30.6 

 37.3 

 37.3 

 36.9 

 36.8 

 37.3 

 38.6 



''}^:{^"^i^^"""^--- 



It. hr. m 



br. gn. m... 



gy.m 



s. v.. brk. sh 

 s. brk. sh... 

 br. m 



gy-oz 



K.v. 07, 



gy. oz 



gy. oz 



glob, oz I 



gy. m. s ! 



It. gy. oz 



gn. in. s I 



It. br. oz i 



gy. oz. for ... ! 



gii. m j 



pter. oz 



crs.co. s.brk.! 



sh. for. I 



CO. oz. for. .. 



Few. 



Few. 



Few. 



Rare. 



Rare. 



Few. 



Rare. 



Few. 



Few. 



Few. 



Rare. 



Rare. 



Rare. 



Common. 



Few. 



Few. 



Few. 



Few. 



Rare. 



Rare. 



TROCHAMMIN.\ NANA (H. B. Brady). 



Plate 17, fig. 1. 



ffaplopfirngiimim iianuvi. II. B. Brady, Quart. Journ. .Micr. Sci., vol. 21, 1881, 

 p. 50; Denkschr. Akad. Wiss. Wien, vol. 43, 1881, ]). 99, pi. 2. figs. 1, n~e. 

 Ann. Mag. Nat. Uist., ser. 5, vol. 8, 1881. p. 406, pi. 21, fig. 1; Rep. Voy. ChaJ- 

 knqer. Zoology, vol. 9, 1884, p. 311, pi. 35, figs. 0-8.-11. B. Brady, Parker. 

 and Jones, Trans. Zool. Soc. London, vol. 14, 1888, p. 218, pi. 41, fig. 20.— 

 Chapman, Journ. Roy. Micr. Soc, 1892, p. 324, pi. 5, fig. 15. — Egger, Abh. 

 Bay. Akad. Wiss. Miinclien, vol. 18, 1893, p. 262, pi. 5, fig. 13-15.— Goes, 

 Kongl. Svensk. Vet. Akad. Handl., vol. 25, No. 9, 1894, p. 22, pi. 5, figs. 

 124-127.— MiLLETT, Journ. Roy. Micr. Soc, 1899, p. 360, pi. 5, fig. 9.— 

 Rhumbler, Zool. Jahrl)., vol. 24, 1906, p. 6^, pi. 5, fig. 56.— Bagg, Proc. U. S. 

 Nat. Mas., vol. 34, 1908, p. 127. — Aweri.w.ew, Mem. Acad. Imp. Sci., St. 

 Petersbourg, ser. 8, vol. 29, No. 3, 1911, p. 21. -^Heron-Allen and Earland, 

 Journ. Roy. Micr. Soc,. 1911, p. 309, pi. 9. figs. 9-11. 



Trochttmmbia nana Cushman, Bull. 71, U. S. Nat. Mus., i)t. 1, 1910, p. 123, figs. 

 190-192.— Pearcey, Trans. Roy. Soc. Edinburgh, vol. 49, 1914, p. 1010. 



Description. — Test small, trochoid, spire depressed, consisting of 

 about two volutions, the last with six or seven chambers, periphery 

 rounded, umbilicate below; chambers inflated, subglobose, somewhat 

 flattened above, sutures distinct; wall arenaceous, thin, smoothly 

 finished; aperture a narrow curved opening at the base of the cham- 

 ber; color light brown except the last-formed chamber, which is usually 

 gray. 



Diameter up to 0.34 mm. 



Distribution. — This species seems characteristic of cold or deep 

 waters. It is known from the Arctic, off Franz Josef Land, where it is 

 recorded as "exceedingly abundant at depths from 89-145 fathoms 



