514 Report of the State Geologist. 



same appearance as the ordinary forms of Fenestella."^ Usually 

 there are three or more ranges of cell apertures on the^branches 

 and two on the dissepiments. 



Fig. 64. A portion of the cellullferous face enlarged. 



Septopora, Prout. 

 (Trans. Acad. Sci. St. Louis, Yol. I, p. 448. 1859.) 



Type, Septopora Cestriensis, Prout. 



Bryozoum infundibuliform, having the general aspect of 

 •Fenestella. On the cellullferous face the cell apertures are 

 arranged in two longitudinal parallel rows, separated by a carina; 

 dissepiments arcuate, angular or straight, and cellullferous. 



Pr')ut in his original description says : " I have established this 

 genus upon the character of the dissepiments, which are more 

 cellullferous than the longitudinal rays (branches). Though in 

 its general features it resembles Fe ^ebtella, it differs in a marked 

 degree by its cellullferous dissepiments." 



This genus differs from Synooladia in having only two ranges 

 of cell apertures, separated by a carina, having the same relation 

 to that genus that Fenestella does to Polypoka. 



