BRYOZOA OF THE PHILIPPINE REGION 



233 



Genus BEANIA Johnston, 1847 



(Diachoris Busk, 1852, and Chaunosia Busk, 1867) 



The mural rim of the zooecia bears areal spinules and apertural 

 spines. The operculum frequently bears ramose appendages. 20-30 

 tentacles. 



Genotype. — Beania mirabilis Johnston, 1847. Recent. 



Diachoris Busk, 1852, is a subgenus containing only the multi- 

 serial forms with six connecting tubes. Levinsen, 1909, thought 



UJ 



Fig. 94. — Genus Petalostegus Levinsen, 1909 



A-D. Petalostegus bicornis Busk, 1885. A. Zoarium showing the general 

 arrangement of the zooecia (after Busk, 1885). B. Zooecium, X 85. There is 

 a frontal shield, formed by five broad hollow spines lobed at the edge and sepa- 

 rated by rows of pores. (After Waters, 1S89.) C, D. Zooecia with a simple, 

 completely chitinized operculum; sessile avicularia. B-D. (After Levinsen, 

 1909.) 



that it could be preserved for species with opercular valve if its 

 presence is confirmed. 



In Chaunosia Busk, 1867, the branches are multiserial and have 

 two connecting tubes. 



Genus STOLONELLA Hincks, 1883 



The areal spinules are joined together by their extremity and form 

 above the ectocyst, 8 false cribrimorph frontal. 

 Genotype. — StoloneUa clausa Hincks, 1883. Recent. 



Family EPISTOMIIDAE Gregory, 1903 

 (Notamiidae Hincks, 1880) 



Zoarium erect or partially prostrate, jointed and attached by root- 

 led. Zooecia paired, extending into three internodes, each <>[ which 

 consists of the distal or largest section of a pair of zooecia, the smaller 



