NORTH AMERICAN EARLY TERTIARY BRYOZOA. 
177 
Genus CREPIS Jullien, 1882. 
1882. Grepis Jullien, Drag-ages dn Travailleur, Bryozoaires draguees dans l’ocean Atlan- 
tique, Bulletin Soeiete Zoologique France, vol. 7, p. 522. 
Oval zooecia, with cryptocyst, not completely closing the area in front, where 
a large opening existed during all of its life. This semielliptical opesium has its 
angles more or less rounded; the chitinous ectocyst, brilliant when it is dry. is 
calcified on its lateral walls, which are raised in front of the opesium and are 
prolonged at the back of the zooecium in a long thread, the end of which is united 
with the parietal ectocyst of the preceding zooecium. (See fig. 24 H, p. 85.) 
Genotype. — Grepis longipes Jullien, 1882. Recent. 
A. Megdpora ringens Hindis, 1880. Zooecia, X 50. (After Hindis, 1880.) * 
B, G. Megdpora liyalina Waters, 1904. B. Sketch, X 35, showing the oral spines and the 
small lateral spines. C. Several zooecia, X 50. (B, C after Waters, 1904.) 
Genus FOVEOLARIA Busk, 1884. 
1884. Foveolaria Busk, Voyage Challenger, Zoology, pt. 1, Cheilostomata, vol. 10, pt. 30, 
p. 68. 
Zoariiun erect, branched and cylindrical, or foliaceous and bilaminar. Front 
of zooecia with a thick granular border very deeply embedded in a pit formed by 
the thickening of the general ectocyst. A sessile avicularium immediately below 
or in front of the lower border of the pit. 
Genotype. — F oveolaria elliptica Busk, 1884. Recent. 
Family AETEIDAE Smitt, 1867. 
Bibliography ( Anatomical ). — Smitt, 1865, Ora Hafs-Bryozoernas utveckling och fettkroppar, 
Ofversigt Kongl. Vetenskaps-Aliademiens Forhandlungar, vol. 22, p. 11, pi. 2, figs. 5-14. — 
Waters, 1896, Notes on the Bryozoa from Rapallo and other Mediterranean localities, chiefly 
55899— 19— Bull. 106- 
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