FORAMINIFERA OF THE NORTH PACIFIC OCEAN. 



43 



perforated and usually more or less beset with short, blunt spines or 

 tubercles. Aperture large and rounded; bordered by a thickened rim 

 or forming a short, wide neck; often partially closed within by a 

 shelly plate. 



"Diameter l/80th inch (0.32 mm.)." 



Distribution. — Brady gives the only recorded station for this species 

 in the North Pacific, that of the Challenger off the coral reefs of 

 Honolulu, Hawaiian Islands, in 40 fathoms. 



SIPHONINA RETICULATA (Czjzek). 

 Plate 16, fig. 4; plate 28, fig. 3. 



Rotalina reticulata Czjzek, Haidinger's Nat. Abh., vol. 2, 1848, p. 145, pi. 13, 



figs. 7-9. 

 Siphonina reticulata Bronn, Lethaea Geognostica, ed. 3, vol. 3, 1853-1856, p. 227, 



pi. 35(?), figs. 23a-c. 

 Truncatulina reticulata H. B. Brady, 



Rep. Voy. Challenger, Zoology, 



vol. 9, 1884, p. 669, pi. 96, figs. 



5-8. — H. B. Brady, Parker, and 



Jones, Trans. Zool. Soc. London, 



vol. 12, 1888, p. 228, pi. 45, figs. 



23, 24.— Terrigi, Mem. Com. 



Geol. Italia, vol. 4, 1891, p. 107, 



pi. 4, fig. 10. — Chaster, First 



Rept. Southport Soc. Nat. Sci., 



1890-1891 (1892), p. 66, pi. 1, fig. 



16. — Egger, Abh. kon. bay. 



Akad. Wiss. Miinchen, CI. n, vol. 



18, 1893, p. 402, pi. 16, figs. 42- 



44.— Flint, Ann. Rep. U. S. Nat. 



Mus., 1897 (1899), p. 334, pi. 78, fig. 3.— Millett, Journ. Roy. Micr. Soc, 



1904, p. 491.— Chapman, Trans. New Zealand Inst., vol. 38, 1905 (1906), p. 



102; Proc. Roy. Soc. Victoria, vol. 22, 1910, p. 286.— Sidebottom, Mem. 



Proc. Manchester Lit. and Philos. Soc, vol. 54, No. 16, 1910, p. 27. 

 Siphonina jimbriata Reuss, Denkschr. Akad. Wiss. Wien, 1849, p. 372, pi. 47, fig. 6. 



Description. — Test free, nearly circular, biconvex, the two sides 

 about equally so; peripheral margin acute and carinate, in small speci- 

 mens with large carinal tubuli giving a serrate periphery, less irreg- 

 ular in adult specimens; chambers numerous, arranged in a rotaliform 

 manner, thick-walled, translucent, distinctly punctate; aperture 

 elliptical, with a definite tubular neck and phialine lip. 



Diameter 0.50 to 0.75 mm. 



Distribution. — The only material of this species I have recorded 

 came from two Albatross stations off Japan, D4S87, in 71 fathoms, 

 bottom temperature 59.7° F., and D4949, in 110 fathoms, bottom 

 temperature 57.8° F. 



Fig. 48.— Siphonina reticulata (Czjzek). X100. 

 o, side view; 6, apertural view. (adapted 

 from Brady.) 



