ART. 14 CHEILOSTOMATOUS BEYOZOA CANU AND BASSLER 5 



tura bears two very small lateral indentations; it is deprived of 

 denticles. 



Genotype. — Stornhypselosaria condylata^ new species. (PI. 1, 

 fig. 3.) 



Genus MESOSTOMARIA, new genus 



Greek : mesos, middle ; stoma, mouth in allusion to the place of the apertura 

 removed from the distal border of the mural rira. 



The ovicell is endotoichal ; it is convex and its orifice is large and 

 placed obliquely above the apertura. The apertura is removed from 

 the distal border of the mural rim and surrounded by a special 

 peristome; it is deprived of denticles. The zooecia are arranged in 

 transverse rows. 



Genotype. — Mesostomaria strictoramae, new species. (PI. 1, fig. 4.) 



Range. — Miocene. Recent. 



Suborder AscoPHORA Levinsen 



Family MEMBRANICELLARIIDAE Levinsen, 1909 



Genus OMOIOSIA, new genus 



The zooecia are hexagonal. The opesium perforates the cryptocyst 

 and is bordered by a salient thread. The accessory zooecia (onycho- 

 cellaria?) are quite similar to the others, but the distal portion of 

 their cryptocyst is much larger. 



Genotype. — Omoiosia {Vincularia) maorica Stoliczka, 1864. 



Range. — Miocene. Recent. ? 



Genus ERINELLA, new name 



Proposed in place of Erina Canu, 1908, preoccupied by Swains in 

 1833. 



Genotype. — E. patagonica Canu, 1908. Patagonia. 



Family PETRALIIDAE Levinsen, 1909 

 Genus PETRALIELLA, new genus 



The ovicell is hyperstomial, never closed by the operculum, buried 

 in the distal zooecium. The shieldlike area is very well developed 

 but irregularly around the aperture; it is very often bipartite and 

 bears almost always two small lateral avicularia; in its proximal 

 portion a large avicularian umbo often appears. 25 tentacles. 



Genotype. — Petraliella {Escharella) hisinuata Smitt, 1872. 



Range. — Miocene — Recent. 



