FORAMINIFERA OF NORTH PACIFIC OCEAN. 39 



LAGENA LAGENOIDES (Williamson). 

 Plate 16, fig. 2. 



Entosolenia marginata Walker and Boys, var. lagenoides Williamson, Rec. 

 Foram. Great Britain, 1858, p. 11, pi. 1, figs. 25, 26. 



Lagena lagenoides Reuss, Sitz. Akad. Wiss. Wien, vol. 46, 1862, p. 324, pi. 2, 

 figs. 27, 28.— H. B. Brady, Rep. Voy. Challenger, Zoology, vol. 9, 1884, 

 p. 479, pi. 60, figs. 6, 8, 9, 12.— Millett, Journ. Roy. Micr. Soc, 1901, p. 623, 

 pi. 14, fig. 8.— Bagg, Proc. U. S. Nat. Mus., vol. 34, 1908, p. 141.— Side- 

 bottom, Journ. Quekett Micr. Club, vol. 11, 1912, p. 411, pi. 18, figs. 22-28. 



Description. — Test flask-shaped, usually compressed, body oval or 

 ovate, surrounded by a simple peripheral keel which has numerous 

 radiating tabulations, neck usually comparatively short, in complete 

 specimens usually joined with the peripheral keel. 



Length 0.4 to 1 mm. 



Distribution. — The single Albatross station, H4566, in 572 fathoms 

 off the Hawaiian Islands, seems to be the only record for this species 

 in the North Pacific. I have a single specimen, here figured, from 

 Nero station 1310 in 518 fathoms, between Yokohama and Guam. 



There are apparently various modifications of the tubulated keeled 

 Lagenas and from the North Pacific material at least two which may 

 be definitely distinguished. Therefore I have here restricted the 

 use of the name to those specimens which have a peripheral keel, 

 which in its unbroken condition extends entirely about the periphery 

 of the test, is rather remotely tubulated, the neck usually seeming a 

 portion of the keel, comparatively short, usually the keel not 

 emarginate but entire. 



LAGENA LAGENOIDES (Williamson), var. TENTJISTRIATA H. B. Brady. 

 Plate 16, fig. 3. 



Lagena tubuli/era H. B. Brady, var. tenuistriata H. B. Brady, Quart. Journ. 

 Micr. Sci., vol. 21, 1881, p. 61. 



Lagena lagenoides Williamson, var. tenuistriata H. B. Brady, Rep. Voy. Chal- 

 lenger, Zoology, vol. 9, 1884, p. 479, pi. 60, fig. 11 (not 15, 16).— Sidebottom, 

 Mem. and Proc. Manchester Lit. and Philos. Soc, vol. 50, No. 5, 1906, p. 12, 

 pi. 2, figs. 9, 10; Journ. Quekett Micr. Club, vol. 11, 1912, p. 413, pi. 19, figs. 4, 5. 



Description. — Test flask-shaped, pyriform, keel with compara- 

 tively few, large, remote tubulations; body of test not greatly com- 

 pressed; surface ornamented with coarse longitudinal costse running 

 the length of the body of the test. 



Length 0.35 to 0.50 mm. 



Distribution. — This restricted varietal form has occurred at four 

 stations in the Nero material at one station; 542 in 1,996 fathoms 

 between Midway Islands and Guam and three stations; 1137 in 

 2,250 fathoms; 1160 in 1,907 fathoms, and 1287 in 1,606 fathoms 

 between Guam and Yokohama. 

 89977°— Bull. 71, pt. 3—13 4 



