40 



PROCEEDINGS OF THE NATIONAL MUSEUM, 



The oeciopore is a small proximal pore placed in the vicinity of a 

 peristome. 



The ovicell is a globular sac, developed transversally, and probably 

 arising from a tube coming from the vicinity of the ancestrula. In 

 its formation it disarranges the peristomie of the tubes which then 

 cease to be adjacent to each other, and some of which are even 

 aborted. The ovicell is therefore formed a little before the complete 

 development of the peristomies. Their formation is almost simul- 

 taneous. 



In longitudinal section the tubes are cylindrical, with triparietal 

 gemmation, and developed on a basal lamella. The meridian section, 



Fig. S. — Stathraepora gabbiana, Ulrich and Basslcr, 1907. 



A. Transverse section, X 16, The tubes are cylindrical. 



B. Meridian section, X 16. 



C. Longitudinal section, X 16, illustrating the triparietal gemmation. 

 Cretaceous (Vincentown) : Vincentown, N. J. 



made near this lamella, shows the usual lozenge shaped areas char- 

 acteristic of dorsal gemmation. 



Occurrence. — Cretaceous (Vincentown marl) : Vincentown, New 

 Jersey. 



Cotypes.—C&t No. 52588, U.S.N.M. 



STATHMEPORA JOHNSTRUPI Pergens. 1886. 



Plate 7, figs. 1^. 



1886. Bisidmonea johnstrvpi Pekgens, La faune des Bryozoaires Garumni- 



ens de Faxe, Annales de la Soci4t6 Royal Malacologique de Belgique, 



Bruxelles, vol 21, pp. 37, 219, pi. 12, figs. 1-6. 

 1892. Bisidmonea johnstrupi Hennig, Studier iifver Bryozoerna i Sveriges 



Kritsystom, I Cheilostoraata, Lunds Universitets Arsskrift, vol. 28, 



No. 11, p. 19. 



