FAMILY 4. SACCAMMINIDAE 79 



Subfamily 4. Webbinellinae 

 Test attached ; wall of agglutinated foreign material. 



Genus WEBBINELLA Rhumbler, 1903 



Plate 5, figui-es 5, 6 



Genotype, by designation, Webbina heininphaerica Jones, Parker and 



H. B. Brady 

 Webbinella Rhumbler, Arch. Prot., vol. 3, 1903, p. 228. 

 Webbi7ia Jones, Parker and H. B. Brady, Pal. Soc. Mon., 1865, p. 27 



(not Webbina d'Orbigny, 1839). 

 Psammosphaera Eimer and Fickert (part), Zeitschr. Wiss. Zool., vol. 

 65, 1899, p. 671. 



Test attached, planoconvex, cir^lar in outline, central part 

 convex, surrounded by a flattened border; v^all of fine sand 

 grains with much cement, smoothly finished without and within ; 

 no general aperture, pseudopodia thrust out along the basal rim. 



Carboniferous to Recent. Widely distributed in the present 

 ocean both as to temperature and depth. 



Genus IRIDIA Heron-Allen and Earland, 1914 



Plate 5, figures 7, 8 



Genoholotype, Iridia diaphayia Heron-Allen and Earland 



Iridia Hekon-Allen and Earland, Trans. Zool. Soc. London, vol. 20, pt. 

 12, 1914, p. 371. 



Test usually attached, consisting of a single chamber lined 

 with a chitinous, transparent membrane, the outer surface con- 

 sisting of sand grains or other foreign material built up into a 

 convex test; aperture irregular. 



Recent. In shallow water, usually warm. 



Genus RHAPHIDOSCENE Vaughan Jennings, 1896 



Plate 5, figures 9, 10 



Genoholotype, Rhaphidosceyie conica Vaughan Jennings 



Rhaphidosceue VAUGHAN JENNINGS, Journ. Linn. Soc, vol. 25, 1896, 

 p. 320. 



Test attached, conical, base broad, upper end pointed, chamber 

 single ; wall composed of sponge spicules arranged lengthwise of 



