NORTH AMERICAN EARLY TERTIARY BRYOZOA. 
283 
Fig. 81. — Genera of the Costulae. 
A. Membraniporella niticla Johnston, 1S3S. Recent. 
B. Cribrilina punctata Hassel, 1841. Recent. 
C. Puellina radiata Moll, 1803. Recent. 
D. Distansescharella jacksonica, new species, X 30. Middle Jacksonian of Georgia. 
E. Qepliyrotes nitida-punctata Sniitt, 1868. Recent. 
F. Metracolposa grandis, new species, X 20. Middle Jacksonian, Wilmington, North 
Carolina. 
G. Corbulipora ornata MacGillivray, 1895. Miocene of Australia. 
H. Acanthocella tubulifera Hindis, 1881, X 25. Recent. 
I. Cribrendoecium tenuicostulatum Canu and Bassler, 1917. Middle Jacksonian, Wilming- 
ton, North Carolina. 
J. Arachnopusia monoceros Busk, 1880, X 25. Recent. 
K. Figularia flgularis Johnston, 1847, X 30. Recent. 
L. Aspidelectra melolontha Busk. 1852, X 25. Recent. 
M. Barroisina elegcmtula Yon Hagenow, 1851. Cretaceous of Aachen. 
N. Reginella furcata Hindis, 1882. Recent. 
O. Lyrula liippocrepis Hindis, 1882. Recent. 
P. Decurtaria cornuta Beissel, 1864. Cretaceous of Aachen. 
Q. Collarina cribrosa Heller, 1867. Recent. 
R. Murinopsis galeata Beissel, 1864. Cretaceous of Aachen. 
S. Steginopora ocellata Jullien, 1886. Cretaceous of France. 
T. Thoracophora Uorrida D’Orbigny, 1852. Cretaceous of France. 
U. Ubaghsia arcifera Jullien, 1886. Cretaceous of France. 
