NORTH AMERICAN EARLY TERTIARY BRYOZOA. 459 



FIG. 132. Genus Smittina Norman, 1903. 



A-E. Smittina reticulata MacGillivray, 1882. A. Zooecia with ovicells, X 50. B. Young 

 cell, X 50. C. Outline of a single adult zooecium, X 50. (A-C after Hincks, 1880.) D. Lat- 

 eral view of a zooecium, X 40. E. End view of same, X 32. (D, F after Levinsen, 1894.) 



F. Smittina trispinosa, var. munita, Hincks, 1880. Section showing denticles, op, oper- 

 culum, aiul spines. (After Waters, 1889.) 



G-I. Smittina antarctica Waters, 1909. G. Transverse section showing lateral septulae, 

 X 25. H. Section showing lateral septulae, X 12. I. Section showing aperture (op), tentacu- 

 lar sheath (ts), and gland-like bodies (gl), X 85. (After Waters, 1904.) 



J, K. Smittina inclusa Waters, 1904. Longitudinal section, X 12. K. Transversal sec- 

 tion, X 12. (After Waters, 1901 and 1904.) 



L. Smittina directa Waters, 1904. Transverse section of a zooecium showing (rp) sep- 

 tulae, (ly) lyrula, X 25. (After Waters, 1900.) M (right half of page). Lyrulae, opercula, 

 and mandibles of Smittina. (After Waters, 1889, 1900, 1904, and Nordgaard, 1905.) 



