66 BULLETIN 125, UNITED STATES NATIONAL MUSEUM. 



Genus FORAMINELLA Levinsen, 1909. 



1909. Foraminella Levinsen, Morphological and Systematic Studies on the Cheilostomatous Bryo- 

 zoa, p. 165. 



The somewhat arched frontal wall has no pores, but on each side a longitudinal 

 series of (1-5) foramina (opesiules). A membranous opercular valve. Independent 

 avicularia without crossbar, with an elongate mandible, on the one side furnished 

 with a wing-like expansion. Hyperstomial ovicell with a membraneous ectooecium. 

 Dietellae (Levinsen). 



Genotype. — Foraminella {Monoporella) lepida Hincks, 1881. Recent. 



Mk::;#^ 



A x75 



Fig. 9 — Genus Odontionella Canu and Bassler, 1917. 



A-E. Odontionella (Membranipora) Mans Hincks, 1885. 



A. Zooecia, X 75. (After Hincks, 1885.) B. Distal wall with septulae, X 25. C. Lateral wall 

 withseptulae, X25. D. Operculum, X 85, showing chitinous ridge (cr) and expansion (ea). E. Zooecia 

 X 25. (B-E after Waters, 1898.) 



F, G, I. Odontionella occvltata Waters, 1887. 



F. Specimen from recent seas with its a\-icularia. G. Example from the Tertiary rocks of New 

 Zealand showing a thick calcareous deposit between the zooecia. I. Avicularian mandible, X 250. 



J, K. Opercula of another species (introduced by error.). 



H. Photograph of a specimen of Odontionella hians Hincks from New Zealand showing the disym- 

 metry of the opesiular indentations, X 20. 



