24 BULLETIN" 71, UNITED STATES NATIONAL MUSEUM. 



species seems to be well distributed in the area, occurring at the 

 following stations: Albatross H4857 in 324 fathoms in Bering Sea; 

 H2922 in 268 fathoms off the Hawaiian Islands; Nero 991 in 1,143 

 fathoms off Guam; Nero 862 in 1,550 fathoms off Luzon; Nero 1160 

 in 1,907 fathoms between Guam and Yokohama; and two Albatross 

 stations off Japan, H4878 in 84 fathoms and D4975 in 712 fathoms. 



LAGENA ACUTICOSTA Reuss, var. PAUCICOSTATA, new variety. 



Plate 9, fig. 1. 



Lagena acuticosta Sidebottom (part), Journ. Quekett Micr. Club, vol. 11, 1912, 

 p. 388, pi. 15, fig. 23 (not fig. 22). 



Description. — Test more globular than in the typical, the costse 

 reduced to three, remaining portion of the test smooth; aperture 

 very small, rounded. 



Length 0.33 mm. 



Distribution. — Type-specimen, Cat. No. 8532, U.S.N.M., from 

 Albatross station D4887, in 71 fathoms off Japan. 



This agrees well with the variety figured by Sidebottom as noted 

 above, the three costse forming the whole of the ornamentation of 

 the test. In our specimen the costse do not continue to the apertural 

 end, though they do in the specimen figured by Sidebottom. 



LAGENA GRACILIS Williamson. 



Plate 8, figs. 5, 6. 



Lagena gracilis Williamson, Ann. Mag. Nat. Hiat., ser. 2, vol. 1, 1848, p. 13, pi. 



1, figs. 3, 4.— Reuss, Sitz. Akad. Wiss. Wien, vol. 46, pt. 2, 1862 (1863), p. 



331, pi. 4, figs. 58-61; pi. 5, fig. 62.— H. B. Brady, Rep. Voy. Challenger, 



Zoology, vol. 9, 1884, p. 464, pi. 58, figs. 19, 22-24.— Eggek, Abh. kon. bay. 



Akad. Wisa. Miinchen, CI. n, vol. 18, 1893, p. 328, pi. 10, figs. 25, 49. 

 Lagena vulgaris, var. gracilis Williamson, Rec. For. Great Britain, 1858, p. 7, 



pi. 1, figs. 12, 13. 



Description. — Test elongate, fusiform, ornamented with 4 to 12 or 

 more high costse or plate-like ribs running the entire length of the 

 test from near the aperture to the apical end, where they unite in an 

 apical spine; neck slender, aperture small, rounded. 



Length up to nearly 1 mm. 



Distribution. — This species was found at numerous Nero stations 

 between Yokohama and Guam, the depths ranging from 518 to 

 1,915 fathoms. It occurred off Guam, Nero station 1464 in 891 

 fathoms, and between Guam and Midway Islands, Nero station 542 

 in 1,996 fathoms. It also occurred at Tuscarora station 47, lat. 24° 

 21' N.; long. 154° 06' E., in 1,499 fathoms. 



These North Pacific examples are very constant in their form and 

 ornamentation, being of the form here figured. The number of 

 costse is somewhat variable. 



