60 FORAMINIFERA 



Genus RHYNCHOSACCUS Rhumbler, 1894 

 Plate 1, figure 10 



Genoholotype, Rhynchosaccus immigrans Rhumbler 

 Rhyyichosaccus Rhumbler, Zeitschr. Wiss. Zool., vol. 57, 1894, p. 595. 



Test tubular, arcuate or with a sharp bend, both ends rounded, 

 the apertural end with a projecting snout, wall thin, chitinous. 

 Recent. Marine. 



Genus RHYNCHOGROMIA Rhumbler, 1894 

 Plate 1, figure 11 

 Genoholotype, Rhynchogroniia variabilis Rhumbler 

 Rhynchogromia Rhumbler, Zeitschr. Wiss. Zool., vol. 57, 1894, p. 590. 

 Test usually elongate, of a single chitinous layer, the proto- 

 plasmic contents usually not completely filling the interior 

 which contains also more or less foreign material; aperture 

 terminal 



Recent. Fresh water and marine. 



Genus DIPLOGROMIA Rhumbler, 1903 



Plate 1, figure 12 

 Holotype, by designation, Grotnia hrunneri Blanc 



Diplogromia Rhumbler, Arch. Prot., vol. 3, 1903, p. 214. 

 Gromia (part) Blanc, C. R. Soc. Helvet., ser. 3, vol. 16, 1886, p. 362 (not 

 of DUJARDIN, 1835). 



Test ovoid, with a double wall, the outer layer of flinty grains 

 and other foreign material, the inner layer chitinous, clear; 

 aperture terminal. 



Recent. Fresh water, Switzerland. 



Genus DIAPHOROPODON Archer, 1869 

 Plate 1, figure 14 



Genoholotype, Diaphoropodon mobile Archer 

 Diaphoropodon Archer, Quart. Journ. Micr. Sci., vol. 9, 1869, p. 394. 

 Test ovate, of chitin with the exterior of foreign material; 

 aperture terminal. 



Recent. Fresh water, Ireland. 



