EAELY TERTIAKY CHEILOSTOME BRYOZOA. 71 



Family CELLEPORIDAE Busk, 1852. 



The ovicell is recumbent. The budding is double; terminal and 

 superficial. The zooecia are more or less erect and cumulate. 



Genus SCHISMOPORA MacGillivray, 1888. 



1888. 8chismopora MacGillivray, Bryozoa in McCoy's Prodromus of the 

 Zoology of Victoria, vol. 2, dec. 17, p. 253. 



The ovicell is perforated. The frontal is smooth. The apertura 

 bears a proximal rimule. No spines. 



Genotypes. — Schismopora {Cellepom) coronopus S. Wood, 1850, 

 and Schismopora {CelUpora) purmcosa Busk, 1854. 



Range. — Jacksonian-Recent. 



Three new species of Schismopora occur in the Jacksonian of the 

 Southern States. 



Genus OSTHIMOSIA JuUien, 1888. 



1888. Osthimosia Jullien, Mission scientiflque du Cap Horn, No. 6, 

 Zoologie, p. 64. 



The ovicell is not perforated. The frontal is surrounded by areolae. 

 The apertura bears a proximal rimule. There are no spines. 



Selected genotype. — Osthimosia {Cellepora) eationensis Busk, 1884. 



Range. — Jacksonian-Recent. 



Jullien's genotype was Osthimosia evexa Jullien, 1888. 



Osthimosia {Reptocelleporina) glomerata Gabb and Horn, 1862, 

 from the Jacksonian and Vicksburgian, is the only American repre- 

 sentative of this genus known. 



Genus COSTAZZIA Neviani, 1895. 



1895. Costazzia Neviani, Briozoi neozoici di alcune localita d'ltalia, BoUe- 

 tino Societa Romana per gli Studi Zoologici, pt. 2, vol. 4, p. 235 

 (sep. 11). 

 The ovicell at the side of the peristome has a flat area and pores 

 around the border. (Waters.) 



I zoeci, acervulati, hanno la frontal molto rigonfia, variamente 



perforata ed ornata da leggere costule ; I'apertura zoeciale subtrigona 



con labbro calloso; grandi aviculari scafoidi sono sparsi fra i zoeci. 



(Neviani.) 



Genotype.— Costazzia {Cellepora) costazzi Savigny-Audouin, 1828. 



Range, — Vicksburgian-Recent. 



