FOEAMIXIFEKA OF THE ATLANTIC OCEAN. 

 Aschevionella rutenatn — inaterial cxavi incd. 



Subfamily 2. Reophacinae. 



Test composed of agglutinated material, sand grains, sponge spic- 

 ules, tests of other foraminifera, etc., \vith a varj'ing amount of 

 cement, chambers in a linear series, aperture usually single and at the 

 distal end of the chamber but occasionally at the side, rarely multiple 

 or cribrate. 



This subfamily includes numerous species of Reophax, Hormosina, 

 and Hajdostiche. The chambers vary in relative size and position, 

 usually being in a straight series but occasionally being oblique or 

 irregularly curved, either overlapping strongly or on the other extreme 

 remotely placed with long tubular connections between the chambers. 

 There seems to be some selective power in various species, sand grains, 

 sponge spicules, and other foraminiferal tests being used wliile in one 

 deep water species, Reophax memhranaccous the test is largely chiti- 

 nous, thin, and nearly transparent. 



Genus REOPHAX Montfort, 1808. 



Reophax Moxtfort (type, R. scorpiurus Montfort), Conch. Syst., vol. 1, 1808, 



p. 330, 83megenre.— H. B. Bk.\dy (parf). Rep. Voy. CJtalUmjer, Zoolog}^ vol. 



9, 1884,p.289.— EiMERandFiCKEHT,Zeitt=chr. Wiss. Zool., vol. 65, 1899, p. 



675.— Ch.\pmax, The Foraminifera, 1902, p. 137. — Cushm.^n, Bull. 71, U. S. 



Nat. Mus., pt. 1, 1910, p. 82. 

 Nodosaria d'Orbigny (not of Lamarck), 1812 (part), Ann. Sci. Nat., vol. 7, 1826, 



p. 255. — -Terquem, Mem. Acad. Imp. Metz, vol. 51, 1870, p. 354. 

 Lituola Parker and Jones (part), Philos. Trans., vol. 155, 1865, p. 407. — Parker, 



Can. Nat., vol. 5, 1870, pp. 177, 180.— Parker, Joxes, and H. B. Brady, 



Ann. Mag. Nat. Hist., ser. 4, a''o1. S, 1871, p. 159. — Siddall, Proc. Chester Soc. 



Nat. Sci., pt. 2, 1878, p. 47. — Bijtschli, in Bronn, Klas.'son und Ordnungen 



des Thierreichs, vol. 1, 1880, p. 192. 

 Haplostirhe Schwager (not of Reusa, 1861;, Jahr. Ver. Vet. Nat. Wiirttemburg, 



vol. 21, 1865, p. 92. 

 Nodulina Riiumbler, Nachr. Kon. Ges..Wi88. Gottingen, 1895, p. 85. 



Descnption. — Test free, composed of chambers in a linear series, 

 usually joined end to end in a straight or slightly curved line, ranging 

 from closely overlapping chambers to remotely separated ones with 

 stoloniferous connections between, chambers few or numerous, wall 



