FORAMINIFEKA OF NOETH PACIFIC OCEAN. 29 



LAGENA INTERMEDIA Sidebottom. 

 Plate 13, fig. 4. 



Lagena semistriata? H. B. Brady, Rep. Voy. Challenger, Zoology, vol. 9, 1884, 



p. 465, pi. 57, fig. 20. 

 Lagena intermedia Sidebottom, Journ. Quekett Micr. Soc, vol. 11, 1912, p. 399, 



pi. 17, figs. 1-3. 



Description. — Test pyriform, broadest near the base, circular in 

 cross section; surface smooth, except the basal portion, which has an 

 irregular series of costse radiating from the center of the base; aper- 

 ture fissurine. 



Length 0.5 mm. 



Distribution. — This species has occurred at but a single station, 

 Nero 1163 in 2,049 fathoms between Guam and Yokohama. 



This agrees very closely with some of the figures given by Side- 

 bottom and with the figure in the Challenger Eeport, but the specimen 

 here figured has also a secondary apical radiating group of costse 

 below the rim. In this regard this specimen is almost intermediate 

 between the rounded specimens of L. exsculpta and L. intermedia. 

 However, in its general characters this seems decidedly to belong to 

 L. intermedia. 



LAGENA FEILDENIANA H. B. Brady. 



Plate 15, figs. 1, 2. 



Lagena feildeniana H. B. Brady, Ann. Mag. Nat. Hist., ser. 5, vol. 1, 1878, p. 

 434, pi. 20, fig. 4; Rep. Voy. Challenger, Zoology, vol. 9, 1884, p. 469, pi. 58, 

 figs. 38, 39.— Egger, Abh. kon. bay. Akad. Wiss. Munchen, CI. n, vol. 18, 

 1893, p. 328, pi. 10, fig. 100. 



Description. — Test elongate, ovate, broad and rounded at the 

 aboral end, tapering nearly to a point at the apertural end; surface 

 ornamentation made up of numerous acute raised costas running 

 longitudinally the entire length of the test, the surface between con- 

 sisting of longitudinal furrows each with a series of perforations, each 

 in a slight depression and ovate in shape, the narrow end toward the 

 apertural end of the test. 



Length about 1 mm. 



Distribution. — Brady records this species in the North Pacific from 

 a single Challenger station in 2,300 fathoms. I have had it from a 

 single Albatross station, D5085, in Sagami Bay, Hondo, Japan, in 622 

 fathoms, bottom temperature 37.8° F. 



With a high-power lens to bring out the details of the ornamentation 

 this is one of the most beautiful species of Lagena. The orna- 

 mentation is simple, but the delicacy of the sculpturing is really 

 beautiful. This seems to be described by Sidebottom. 1 as Lagena 

 hertwigiana H. B. Brady, var. undulata Sidebottom. 



» Journ. Quekett Micr. Club, vol. 11, 1912, p. 397, pi. 16, figs. 26-28. 



