138 ALLAN HANCOCK PACIFIC EXPEDITIONS VOL.6 



slightly depressed, very oblique; wall coarsely arenaceous, somewhat 

 roughened, composed of coarse arenaceous grains with little cement, mak- 

 ing the test very fragile ; aperture a narrow, highly arched opening at the 

 inner margin of the last chamber, in a re-entrant. Length of holotype, 

 0.52 mm.; maximum width, 0.41 mm.; maximum thickness, 0.30 mm. 



Holotype (AHF no. 27) from Hancock Expedition Station 583, 

 San Francisco Bay, Ecuador, in 10 fms. 



Distribution. — It has not been noted at any other station, but is quite 

 common at the type locality, latitude 0° 45' 30'' S., longitude 80° IT W. 



Textularia ramosa Lalicker and McCulloch, new species 

 Plate 15, Figs. 20a, b, c, d 



Test very elongate, slender, usually slightly curved or twisted, early 

 portion very slender, subrhomboidal in end view, periphery acute, serrate ; 

 chambers very numerous, low and broad, somewhat inflated, especially at 

 the upper margin, depressed at the lower margin; sutures distinct, de- 

 pressed, straight, oblique, making an angle of about 25° with the trans- 

 verse axis in the microspheric form ; wall finely arenaceous and smoothly 

 finished, composed qf a large proportion of calcareous fragments and 

 some arenaceous grains, cemented with calcareous cement; aperture a 

 broad, low slit at the inner margin of the last chamber, in a slight re- 

 entrant. Length of holotype, 1.00 mm.; maximum width, 0.43 mm.; 

 maximum thickness, 0.23 mm. 



Holotype (AHF no. 28) from Hancock Expedition Station 487, 

 Galapagos Islands, latitude 1° 01' S., longitude 89° 30' W., depth 

 400 fms. 



Distribution. — It has not been noted from any other stations. 



Textularia rugosa (Reuss) 

 Plate 16, Figs. 21a, b, c 



Plecanium rugosum Reuss, Sitz. k. Ak. Wiss. Wien, vol. 59, Abth. 1, 

 1869, p. 453, pi. l,figs. 3fl, ^. 



Textularia rugosa H. B. Brady, Rep. Voy. Challenger, ZooL, vol. 9, 

 1884, p. 363, pi. 42, figs. 23, 24; Chapman, Journ. Linn. Soc. ZooL, vol. 

 28, 1900, p. 185; 1. c, vol. 30, 1907, p. 27, pi. 3, fig. 57; Heron-Allen 

 and Earland, Trans. Zool. Soc. London, vol. 20, 1915, p. 625, pi. 47, 

 figs. 7-9; Cushman, Carnegie Instit. Washington Publ. No. 213, 1918, 

 p. 289; U. S. Nat. Mus. Bull. 100, vol. 4, 1921, p. 114, pi. 23, figs. 3, 4; 



