FORAMINIFEEA OF NORTH PACIFIC OCEAN. 25 



LAGENA GRACILIS Williamson, var. 

 Plate 8, fig. 7. 



Description. — Test elongate, the body of the test with numerous 

 costse, the apertural end with comparatively few, plate-like costae 

 independent of the costaa of the body. 



Length 0.4 mm. 



Distribution. — Figured specimen from Nero station 1294 in 1,417 

 fathoms between Guam and Yokohama. 



LAGENA INFEROCOSTATA, new species. 

 Plate 8, fig. 8. 



Description. — Test elongate, subcylindrical or fusiform, central 

 portion with nearly parallel sides, abruptly pointed at either end; 

 lower portion costate, the coarse costss meeting in a ring at the base 

 of the test; upper portion of test without costse, nearly smooth 

 except for a reticulation of irregularly placed depressions; aperture 

 circular, without a definite neck. 



Length 0.35 mm. 



Distribution. — Type-specimen, Cat. No. 8533, U.S.N.M., from Nero 

 station 1073 in 1,208 fathoms between Yokohama and Guam. 



This species is remotely related to L. acuticosta in some of its 

 characters. 



LAGENA MUCRONULATA Reuss. 

 Plate 8, fig. 4. 



Lagena mucronulata Reuss, Sitz. Akad. Wiss. Wien, vol. 46, pt. 1, 1862 (1863), 

 p. 329, pi. 4, fig. 52. 



Description. — Test fusiform, the apical end tapering into a short 

 spinose projection; the apertural end with a short nee', ending in a 

 subglobular portion, the neck below being somewhat annular, surface 

 ornamented with a few coarse costse extending from a rim below the 

 neck to the apical end. 



Length 0.5 mm. 



Distribution. — This species was found at Nero station 1064 between 

 Guam and Yokohama in 1,588 fathoms. 



The peculiar form of the test and the shape of the apertural end of 

 the neck seem to be distinctive features. 



LAGENA PLUMIGERA H. B. Brady. 



Plate 12, fig. 4. 



Lagena plumigera H. B. Brady, Quart. Journ. Micr. Sci., vol. 21, 1881, p. 62; 

 Rep. Voy. Challenger, Zoology, vol. 9, 1884, p. 465, pi. 58, figs. 25, 27.— 

 Egger, Abh. kon. bay. Akad. Wiss. Miinchen, CI. n, vol. 18, 1893, p. 329, 

 pi. 10, figs. 37, 38.— Millett, Journ. Roy. Micr. Soc, 1901, p. 490, pi. 8, fig. 8. 



Description. — Test flask-shaped, broadest near the base tapering to 

 a long slender neck; wall ornamented with seven to twelve longitudinal 



