128 



BULLETIN 104, UNITED STATES NATIONAL MUSEUM 



Genoholotype. — Planorbulina vermiculata d'Orbigny. 



Test attached, in the early stages similar to Cibicides, the chambers 

 elongating in later growth and becoming nearly or completely an- 

 nular; wall calcareous, coarsely perforate; aperture in the early 

 stages as in Cibicides, in the adult formed by the numerous large 

 pores scattered over the surface. 



Recent. 



CYCLOCIBICIDES VERMICULATA (d'Orbigny) 



This is a common Mediterranean species, but the only Atlantic 

 records are those of Heron-Allen and Earland from off Selsey Bill, 

 England, and a single record from the Clare Island region. 



Genus WEBBINA d'Orbigny, 1839 



Wehbina d'Orbigny, in Barker Webb and Berthelot, Hist. Nat. lies Canaries, 

 1839, vol. 2, pt. 2, "Foraminiferes," p. 125. — Cushman, Special Publ. 

 No. 1, Cushman Lab. Foram. Res., 1928, p. 324. 



Webbum Rhumbler, Foram. Plankton Exped., pt. 2, 1913, p. 445 (genotype, 

 by designation, Webbina rugosa d'Orbigny). 



Genoholotype. — Webbina rugosa d'Orbigny. 



Test attached, consisting of a few chambers with a neck and cir- 

 cular aperture with a slight lip, the wall calcareous and perforate. 

 Tertiary and Recent. 



WEBBINA RUGOSA d'Orbigny 



Plate 24, figures 4 a-c 



Webbina rugosa d'Orbigny, in Barker Webb and Berthelot, Hist. Nat. lies 

 Canaries, 1839, vol. 2, pt. 2, "Foraminiferes," p. 126, pi. 1, figs. 16-18. 



A figure is given of d'Orbigny's type from the Canary Islands. It 

 is an attached flattened form with a rugose surface, and in the uncoiled 

 adult has a tenninal aperture, rounded and with a lip. 



Webbina rugosa — Material examined 



Family 42. PLANORBULINIDAE 



Test, in the early stages, coiled, attached by the dorsal surface, 

 chambers in a spiral arrangement, apertures single, later with the 

 chambers added in annular series, the apertures usually two to a 

 chamber, the test free and becoming bilaterally symmetrical, not 

 developing pillars. 



