BRYOZOA OF THE PHILIPPINE REGION 99 



Family ALDERINIDAE Canu and Bassler, 1927 



This family was proposed for all the Membraniporae in which the 

 ovicell is hyperstomial. It includes therefore the 3rd and 4th sections 

 of Membraniporae of our classification of 1920. 



Our section 3 of the Membraniporae (1920) contained PeriporoseUa 

 Canu and Bassler, 1917, Ellisina Norman, 1903, Grammella Canu, 

 1917 (Crassimarginatella Canu, 1909), Membraniporidra Canu and 

 Bassler, 1917, Tremopora Ortmann, 1890, and Larnacius Norman, 

 1903, all of which except Tremopora (now referred to the Hianto- 

 poridae) we now refer to the Alderinidae. 



Section 4 of the Membraniporae of our 1920 classification contained 

 Alderina Norman, 1903, Callopora Gray, 1848, Tegella Levinsen, 

 1909, Amphiblestrum Gray, 1848, Ramphonotus Norman, 1894, 

 Stamenocella Canu and Bassler, 1917, Ammatophora Norman, 1903, 

 and Marssonopora Lang, 1914, all now placed in the Alderinidae. 



Our section 5 (Miscellaneous Membraniporae) contained Cauloram- 

 phus Norman, 1903, Foveolaria Busk, 1883, Membrostega Jullien, 

 1903, and Antropora Norman, 1903. Of this list Membrostega proves 

 to be a synonym of Hiantopora MacGillivray (Hiantoporidae) and 

 Antropora is referred to the Hincksinidae, but the other genera of 

 section 5 are now placed in the Alderinidae. To this list we add 

 Doryporella Norman, 1903, a subgenus of Callopora, Frurionella 

 Canu and Bassler, 1927, Euritina Canu, 1900, Allantopora Lang, 

 1914, Gephyrotes Norman, 1903, Cribrilina Gray, 1848, Acanthocella 

 Canu and Bassler, 1917 , Pyrulella Harmer, 1926, and Membraniporella 

 Smitt, 1873. All of these genera are illustrated in our 1920 work or 

 in the present volume. A discussion of our reasons for including 

 Cribrilina, Acanthocella and Membraniporella in this family is given 

 in our work on the bryozoa of the Gulf of Mexico. 



It is probable that certain articulated genera will some day be 

 classed in this new family, but their larval system not being known, 

 it is preferable to leave them in the families where now placed. There 

 are also some exceptions to make regarding the genus AmpMblestrum, 

 the anatomy of which is absolutely unknown; some species belong 

 perhaps to the Opesiulidae. 



• * 

 Genus PYRULELLA Harmer, 1926 



Zooecia with a distinct gymnocyst, which may be reduced. Opesia 

 more or less oval, surrounded by spines; cryptocyst slight or mod- 

 erate. Avicularia, if present, vicarious (interzooecial). Ovicells 

 hyperstomial. Dietellae wanting (Harmer). The operculum closes 

 the ovicell. 



Genotype. — Pyrulella (Membranipora) pyrula Hincks, 1881. 



Range. — Cretaceous — Recent. 



