NO. 1 CUSHMAN, MCCULLOCH: ARENACEOUS FORAMINIFERA 61 



Reophax spiculotestus Cushman 

 Plate 3, Fig. 10 



Reophax spiculotestus Cushman, Proc. U. S. Nat. Mus., vol. 38, 

 1910, p. 438 (in text); Bull. 100, vol. 4, 1921, p. 72, pi. 11, fig. 1 ; 

 pi. 13, fig. 2. 



Test of medium size, composed of a linear series of elongate cham- 

 bers, oval, in a straight or more often slightly curved line, contracted 

 at the ends of each chamber, increasing rapidly in size toward the aper- 

 tural end; perfect adult specimens with six or more chambers; wall 

 thin, composed largely of siliceous sponge spicules, for the most part 

 laid lengthwise of the test and firmly cemented ; some sand grains 

 present, usually neatly cemented ; aperture fairly large ; color grayish. 



Length up to 2.00 mm. 



The types of this species were from the Pacific in the Philippine 

 region. Similar specimens have occurred in our material from several 

 stations: 412, 410, 411, 414, 478, 481, 488. 



Distribution. — All of the station numbers listed are localities of the 

 Galapagos Islands; Tagus Cove, 9 fms. in and around the region of 

 Duncan Island, 45 to 111 fms.; Cartago Bay, Albemarle Island, 12 

 fms.; off Hood Island in 160 fms. 



Reophax scottii Chaster 

 Plate 3, Fig. 11 



Reophax nodulosa (?) Scott, 8th Ann. Rep't Fisheries Board of 

 Scotland, pt. 3, 1890, p. 314. 



Reophax scottii Chaster, First Rep't Southport Soc. Nat. Sci., 1890- 

 91 (1892), p. 57, pi. 1, fig. 1.— Millett, Journ. Roy. Micr. Soc, 

 1899, p. 255, pi. 4, fig. 13.— Sidebottom, Mem. Proc. Manchester Lit. 

 and Philos. Soc, vol. 49, no. 5, 1905, p. 2; vol. 54, pt. 3, no. 16, 1910, 

 p. 8. — Heron-Allen and Earland, Proc. Roy. Irish Acad., vol. 31, pt. 

 64, 1913, p. 44: Trans. Linn. Soc London, vol. 11, pt. 13, 1916, p. 

 222; Journ. Roy. Micr. Soc, vol. 50, 1930, p. 67.— Lacroix, Bull. 

 Instit. Oceanographique, no. 549, 1930, p. 6, fig. 8 (in text). 



Test very elongate, slender, composed of a large number of cham- 

 bers, the early ones subcylindrical, later becoming pyriform in the 

 adult with a truncate base and very narrow neck at the outer end; 

 wall largely composed of chitin, flexible; aperture small, terminal. 



Length 1.00 mm or more; diameter 0.08-0.10 mm. 



