632 BULLETIN 106, UNITED STATES NATIONAL MUSEUM. 



Genus MAMILLOPORA Smitt, 1872. 



1872. Hamillopora SMITT, Floridan Bryozoa, Pt. 1. Kong. Svenska Veteuskaps Akademiens 

 Handlingar, vol. 10, No. 11, p. 33. 



The zoarium is cupuliform. The apertura is elliptical with two submedian 

 cardelles. There are some avicularia between the zooecia. The ovicelled zooecia 

 are much larger ; their apertura is not transverse. 



Genotype. M amillopora (nipula Smitt, 1872. Recent (Florida). 



A B 



Fin. 195. Genus Mamillopora Smitt, 1872. 



A, B. Mamillopora cupula Smitt, 1872. Zoarium, natural size, and zooecia, enlarged. (After 

 Smitt, 1872.) 



