BRYOZOA OF THE PHILIPPINE REGION 



449 



Genus DIGENOPORA Maplestone, 1899 



The zooecia have two sets of pores or fenestrae, one set submarginal, 

 segregated, oval or round, the other set on the front of the zooecium 

 below the apertura, pyriform. 



Genotype. — Digenopora compta Maplestone, 1899. 



Range. — Miocene of Australia. 



Genus uncertain, the gonoecia not being known. 



Genus CRIBRICELLINA Canu and Bassler, 1927 



(Cribricella Levinsen, 1909, preoccupied) 



The ovicell is a terminal gonoecium. The operculum has a straight 

 or but slightly curved 

 edge. The operculum 

 of the gonozooecium 

 much wider, has a 

 straight proximal 

 edge. The sternal 

 area has numerous 

 scattered pores, of 

 which the outermost 

 are arranged in a dis- 

 tinct curved line, and 

 a small transversely 

 oval cryptocyst lam- 

 ina on its inner sur- 

 face. The hinge-teeth 

 are rudimentary or 

 indistinct. 



Genotype . — Cri bri- 

 cella (Catenicella) 

 rufa MacGilli vray, 



Fig. 181. — Genus Catenicellopsis Wilson, 1880, and 

 Genus Digenopora Maplestone, 1899 



A, B. Catenicellopsis delicalula Wilson, 1880. A. A 

 branch with ovicelled zooecium,the ovicells perforated. 

 (After MacGillivray, 1885.) B. Operculum, X85. 

 (After Waters, 1887.) C, D. Digenopora compta 

 Maplestone, 1899. Two zooecia united and a single 

 zooecium. (After Maplestone, 1899.) Miocene of 

 Australia. 



1868. Recent. 



Genus CALPIDIUM Busk, 1852 



The ovicell is a terminal gonoecium. The operculum has a sinus. 

 The operculum of the gonozooecium much wider, has a straight proxi- 

 mal edge. The sternal area has 5 fenestrae. The aperture, the anter 

 of which is surrounded by a strongly projecting margin, has a trilobed 

 or triangular sinus ending in a point, and is provided with two very 

 strong hinge teeth, projecting within the aperture. The septulae of 

 the lateral chambers are placed in small rounded depressions. 



Genotype. — Calpidium ornatum Busk, 1852. 



Range. — Miocene of Australia. Recent. 



Genus STROPHIPORA MacGillivray, 1895 



The gonoecia are unknown. No sternal area. The whole of the 

 frontal surface is covered by the two infrascapular chambers, which 



