NO. 1 CUSHMAN, MCCULLOCH : ARENACEOUS FORAMINIFERA 81 



very slightly depressed ; wall arenaceous, somewhat roughened, usually 

 smooth within ; aperture a more or less elongated, curved slit at the base 

 of the apertural face of the chamber, simple; color gray or brown. 



Diameter 0.45-0.65 mm. 



There are specimens from two localities only which may belong to 

 this species ; for the most part they are small and have only 5 chambers 

 in the last- formed coil similar to our figure. Localities: 227, 2071. 



At some of our other localities the wall of the species has a con- 

 siderable proportion of sponge spicules but this is apparently due to the 

 condition of the ocean bottom at these localities. This form occurs at 

 the following stations: 461, 226, A-16. It is particularly marked at sta- 

 tions: 416, 413, 461. 



Distribution. — Off Guadalupe Island, Mexico, in 200 fms. and off 

 Cape San Lucas in 345 fms. The forms having sponge spicules show a 

 range from Cordova, Alaska, to the Galapagos Islands, off Albemarle 

 and Duncan islands. 



Haplophragmoides trullissatum (H. B. Brady) 

 Plate 6, Figs. 9-11 



Trochammina trullissata H. B. Brady, Quart. Jour. Micr. Sci., vol. 

 19, 1879, p. 56, pi. 5, figs. lOa, b, 11; Rep. Voy. Challenger, Zoology, 

 vol. 9, 1884, p. 342, pi. 40, figs. 14-16 (not fig. 13).— Haeusler, Abh. 

 Schweiz. Pal. Ges., vol. 17, 1890, p. 64, pi. 10, figs. 9, 11.— Egger, 

 Abh. Bay. Akad. Wiss. Munchen, vol. 18, 1893, p. 265, pi. 5, figs. 25. 

 26 (?). — Chapman, Proc. Zool. Soc. London, 1895, p. 18. — Goes, 

 Bull. Mus. Comp. Zool., vol. 29, 1896, p. 33.— Millett, Journ. Roy. 

 Micr. Soc, 1899, p. 364.— Bagg, Bull. 513, U. S. Geol. Surv., 1912, 

 p. 34, pi. 7, figs. 2a, b. 



Haplophragmoides trullissata Cushman, Bull. 71, U. S. Nat. Mus., 

 pt. 1, 1910, p. 100, figs. \A^a, b. — Pearcey, Trans. Roy. Soc. Edinburgh, 

 vol. 49, 1914, p. 1008.— Cushman, Bull. 104, U. S. Nat. Mus., pt. 2, 

 1920, p. 43, pi. 9, fig. 5. 



Test small, planispiral, composed of about three coils, not completely 

 involute, the chambers of earlier coils visible at the center in the um- 

 bilical region which is also depressed, periphery slightly lobulated, cham- 

 bers numerous, 7-9 in the last-formed coil, subglobular, sutures distinct, 

 slightly depressed, wall of fine sand grains with an excess of yellowish 

 or reddish-brown cement, smooth and polished ; aperture a short narrow 

 slit slightly above the base of the chamber; color yellowish or reddish 

 brown. 



