CYd^OSTOMATOUS BRYOZOA — CANU AND BASSLER. 



51 



The genus Fleuronea resembles the genus Crisina D'Orbigny 1850 

 very much, but it differs in the presence of tergopores (and not 

 vacuoles), in the quite different ovicell, and in its salient oeciostome. 

 Occurreiice.—EocQTiQ (Jacksonian) Jackson, Mississippi. 

 Phsioti/pes.—C'At No. 68934, U.S.N.M. 



Genus TENNYSONIA Busk, 1867. 

 1867. Tennyfionia Busk, Zaupliytology. Quarterly Journal ilicroscupic 

 Science, vol. 7, p. 240, pi. 36. 

 Tubuliporidae bearing mesopores on the frontal. 

 Genotype. — Tennysonia stellata Busk, 186T. Recent. 



TENNYSONIA STELLATA Busk. 1867. 



Plate 11, ligs. 8-10. 

 1875. Tennysonia stellata Busk, Catalogue JSIarine Poly/.oa in British 

 Museum, pt. 3, Cyclostoniata, p. 34, pi. 31, fig. 6. 

 We have not discovered the ovicell in this interesting generic type 

 but have found it in the closelv allied Idmonea contort a Busk. The 





Fiu. 9. — Tennysonia stellata Busk, 1867. 



A. Tangential section, X 25. 



B, C. Two vertical sections, X 12, illustrating the thick ba.sal lamella, the 

 vesicular walls and the formation of the mesopores, as well as the minute 

 pores of the walls. 



D. Transverse section, X 12. 

 Recent: Port Elizabeth, South Africa. 



internal structure of both these species is essentially as shown in 

 the accompanying figures. 



OccuT7'ence.—RQQ^i\i: Algoa Bay and Port Elizabeth, South 

 Africa. 



