. Bulletin - United States National Museum. Science. BRYOZOA OF THE PHILIPPINE REGION 63 tridae for the reception of the genus Biflustra. "The quadrangular shape of the zooecia, as well as their strong usually high and hardly calcified and granular margins, in most cases will make the bifius- tridan type ; He cites three species: Flustra lacroixii Savigny-Audouin, 1826, although under this name he figures Aplousina fllum Jullien, 1902, Biflustra denticulata which is of very different structure (Hemiseptella) and Flustra savartii Savigny-Auduoin, 1826. These three authors
. Bulletin - United States National Museum. Science. BRYOZOA OF THE PHILIPPINE REGION 63 tridae for the reception of the genus Biflustra. "The quadrangular shape of the zooecia, as well as their strong usually high and hardly calcified and granular margins, in most cases will make the bifius- tridan type ; He cites three species: Flustra lacroixii Savigny-Audouin, 1826, although under this name he figures Aplousina fllum Jullien, 1902, Biflustra denticulata which is of very different structure (Hemiseptella) and Flustra savartii Savigny-Auduoin, 1826. These three authors have then principally considered as types of the genus Biflustra, Flustra savartii, in which the colonies are fre- quently bilamellar. In ac- cordance with the rules of nomenclature which require the recognition of old names, we might recognize Biflustra with Flustra savartii as the genotype, but as the pale- ontologists have introduced into this genus a great num- ber of species of very differ- ent structure we created in 1917 the genus AcantJiodesia in order to avoid all confu- sion. However, we can main- tain Smitt's name for the family. In the absence of known larvae we can not state if this family is a nat- ural one. Conopeum Norman, 1903, AcantJiodesia Canu and Bassler, 1920, Adenifera Canu and Bassler, 1917, Cupuladria Canu and Bass- ler, 1920, Heliodoma Calvet, 1907, Otionella Canu and Bassler, 1917, Trochopora D'Orbigny, 1852, Crepis Jullien, 1882, Discoflustrellaria D'Orbigny, 1851, and Membraniporina Levinsen, 1909, were described and illustrated by us under section 1 of Membraniporae (no ovicoll) in our monograph of 1920. Discoflustrellaria is now referred to the Mamilloporidae but all the other genera and in addition Cellarinidra Canu and Bassler, 1927 (Cellarina D'Orbigny, 1851, preoccupied) and Quadricellaria D'Orbigny, 1850, here described and figured are now referred to the Biflustridae Smitt, 1872. Membranipora Blainville, 1830, which has the same standing as
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