FORAMINIFERA OF NORTH PACIFIC OCEAN. 45 



between the two keels regularly crenulated, apertural end with a 

 short broad neck, truncate. 



Length 0.35 mm. 



Distribution. — Type-specimen, Cat. No. 8542, U.S.N.M., from Alba- 

 tross station H4878 in 84 fathoms off Japan. It also occurred at 

 Albatross station D4957 in 437 fathoms; also off Japan and Nero 

 station 1464 in 891 fathoms off Guam. 



This variety seems rather distinctive. 



LAGENA ORBIGNYANA (Seguenza), var. ALATA, new variety. 

 Plate 23, fig. 1. 



Description. — Variety with the central portion smooth, except at 

 the border, where it is regularly pitted, peripheral keel extended 

 outward into a very broad, thin keel extending about the entire test 

 from the aperture, radiately striate, basal border tending to become 

 denticulate. 



Length 0.45 mm. 



Distribution. — Type-specimen, Cat. No. 8543, U.S.N.M., from Alba- 

 tross station D4953 in 1,350 fathoms off Japan. 



This seems to be different from any of the previously described 

 varieties of this species. 



LAGENA FAVOSO-PUNCTATA H. B. Brady. 



Plate 11, fig. 5. 



Lagena favoso-punctata H. B. Brady, Quart. Journ. Mier. Soc, vol. 21, 1881, 

 p. 62; Rep. Voy. Challenger, Zoology, vol. 9, 1884, p. 473, pi. 58, fig. 35; pi. 59, 

 fig. 4; pi. 61, fig. 2. — Egger, Abh. kon. bay. Akad. Wiss. Munchen, CI. n, 

 vol. 18, 1893, p. 325, pi. 10, fig. 98.— Bagg, Proc. U. S. Nat. Mus., vol. 34, 

 1908, p. 140. 



Description. — Test ecto- or entosolenian, shape variable; surface 

 areolated or reticulated, with a conspicuous orifice or perforation in 

 the middle of each area or depression. 



Length 0.34 mm. or less. , 



Distribution. — The only North Pacific records for this species are 

 those given by Bagg, H4590 in 978 fathoms and H4694 in 865 fath- 

 oms off the Hawaiian Islands. 



LAGENA TRIGONO-MARGINATA Parker and Jones 



Plate 14, figs. 3, 4. 



Lagena trigono-marginata Parker and Jones, Philos. Trans., vol. 155, 1865, p. 

 348, pi. 18, figs, la, b.— Wright, Proc. Belfast Nat. Field Club, 1876-77, App., 

 p. 104, pi. 4, figs. 8a, 6. — H. B. Brady, Rep. Voy. Challenger, Zoology, vol. 9, 

 1884, p. 482, pi. 61, figs. 12, 13. 



Description. — Test ovate or pyriform, trifacial, the angles of the 

 test ornamented by a marginal beading with an acute edge often 



