NORTH AMERICAN EARLY TERTIARY BRYOZOA. 



177 



Genus CREPIS Jullien, 1882. 



1SS2. OY///.V .TT-U.IKN, Pragages du Tniruitli'tu; Bryozoaires draguees dans 1'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 zooecinm. (See fig. 24 H, p. 85.) 



Genotype. Crepis longipes Jnllien. 1882. Recent. 



FIG. 45. Genus Megapora Hincks. 1877. 



A. Mi'iitiiHim rini/cns Hincks, 1880. Zooecia, X ."ill. (After Hincks, 1880.) 



B. C. Mrim/torn IniuUna Waters, 1904. B. Sketch. X S5. showing the oral spines and (he 

 small lateral spines. C. Several zooecia. X 50. (B. C after Waters, 1904.) 



Genus FOVEOLARIA Busk, 1884. 



1884. Foreolnritt BUSK, Voyage Challenriei; Zoology, pt. 1, Cheilostomata, vol. 10. pt. 30, 

 p. 68. 



Zoarium 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. Foveolaria elliptica Busk, 1884. Eecent. 



Family AETEIDAE Smitt, 1867. 



Bibliography ( Ainit"ntical). SMITT, 1865, Om Hafs-Hryozoernas utveckling och fettkroppar, 

 Ofversigt Kougl. Vetenskaps-Akademiens Forliandlungar, vol. 22, p. 11, pi. 2, figs. 5-14. 

 WATERS, 1896, Notes on the Bryozoa from Itapalln and other Mediterranean localities, chiefly 



55899 19 Bull. 106 12 



