ART. 14 CHEILOSTOMATOUS BRYOZOA CANU AND BASSLER 7 



sporadic interzooecial avicularia. 17-19 tentacles. Special oral 

 glands. 



Genotype. — Cigclisula {Escharoides) occlusa Busk, 1884. Recent. 



Genus RAGIONULA, new genus 



Greek : ragion, small grains, in reference to the aspect of the frontal. 



The ovicell is hyperstomial, opening into the peristomie, not closed 

 by the operculum. The frontal is (in appearance) a very thick, 

 granular pleurocyst. The apertura is semicircular. The peristomice 

 bears a pseudorimule bordered by a small eccentric peristomial 

 avicularium. The operculum and the mandible are of the type of 

 Porella. 



Genotype. — Ragionula (Eschara) rosacea Busk, 1856. Recent. 



Genus DIATOSULA, new genus 



Greek : diatos, having two handles, referring to the aspect of the zooe- 

 cium. 



The ovicell is hyperstomial and opens in the peristomie; it bears 

 a triangular area bordered with pores. The frontal is very thick 

 and smooth. The apertura is formed of a large anter separated 

 from the small poster by two cardelles. The peristomice bears a 

 pseudorimule limited laterally by two peristomial avicularia more 

 or less salient and visible. On the frontal a large spathulated avi- 

 cularium sometimes appears. 



Genotype. — Myriosoum marionense Busk, 1884. Recent. 



Family ESCHARELLIDAE Levinsen, 1909 

 Genus GEMELLIPORIDRA, new genus 



The ovicell is hyperstomial and is always closed by the operculum. 

 The frontal and the ovicell are covered by tremopores. The aperture 

 bears two small lateral indentations separating a very large subor- 

 bicular anter from a very small concave poster. The operculum 

 bears two lateral marks corresponding to oral indentations and two 

 linear muscular attachments. There are two oral avicularia irreg- 

 ularly arranged on each side of the aperture. The complete colonies 

 are multilamellar and the zooecia are then poorly oriented. 



Genotype. — Genielliporidra typica new species. Recent. (PI. 1, 

 fig. 9.) 



Range. — Pleistocene. Recent. 



Genus HIPPOPLEURIFERA, new genus 



The ovicell is hyperstomial and is not closed by the operculum. 

 The frontal bears at least a double row of areolar pores separated 



