CELLULARIID.E. 19 



I. ARTICULATA. 



H 2. MULTICELLULARES. 



Fam. I. CELLULAEIIDM, Busk. 



Genus 1. SCRUPOCELLARIA, Van Beneden. 



Cellulis rhoraboidalibus, postice sinuatis ; angulo cellulae superiore aviculario sessili, 

 armato ; vibraculo in sinu dorsali posito ; apertura spinis marginalibus supra armata, 

 operculo pedunculate subiude tecta. Cellulis biserialibus, in singulo internodio 

 numerosis. 



Cells rhomboidal, with a sinus behind ; a sessile avicularium on the upper and outer 

 angle ; a vibraculum seated in the dorsal sinus ; aperture, with marginal spines above ; 

 sometimes protected by a pedunculate operculum. Cells biserial, numerous in each 

 internode. 



SCRUPOCELLARIA, Van Beneden, Recherches, &c., p. 42 ; Busk. 



BICELLARIA (sp.), Blainville. 



CELLULARIA (sp.), Pallas ; Fleming ; Johnst. 



CELLARIA (pars), Solander and Ellis. 



SCRUPARIA (sp.), Oken. 



BACTRIDIUM, Reuss., Foss. Polyp., d. Wien. Tertiarbeck, p. 55. 



1. S. SCRUPOSA (?) Lin. PI. I, fig. 6. 



Cellulis subelongatis, angustis; apertura elliptica, 3 4 spinis marginalibus supra 

 armata ; ovicellula glabra. 



Cells subelongate, narrow; aperture elliptical, with three or four marginal spines 

 above ; ovicell smooth. 



SERT. SCRUPOSA, Linn. 



CELLULARIA SCRUPOSA, Pallas, Johnston. 



SCRUPOCELLARIA SCKUPOSA, V. Beneden, 1. c., pp. 43 and 50, pi. v, figs. 816. Bus!,, 



Ann. Nat. Hist., 2 ser., vii, p. 85, pi. ix, figs. 8, 10. Brit. 



M. Cat., part i, p. 25, pi. xxii, figs. 3, -1. 



