BRYOZOA OF THE PHILIPPINE REGION 243 



Genus MURINOPSIA Jullien, 1886 



Zooccia with the frontal formed by ribs showing no relief on the 

 exterior surface, separated by transverse lines of rounded pores. 

 Orifice subcircular, deprived of marginal spines. Avicularia arising on 

 the zooecial circumference and forming a group in front of the orifice. 

 Zooecia resembling the body of a bat. (Translation after Jullien, 

 1886; see also Lang, 1922, p. 390.) 



Genotype. — Murinopsia (Semiescharipora) galeata Beissel, 1865. 



Cretaceous. 



Genus LYRULA Jullien, 1886 



Zooecia with the frontal formed by a few, voluminous ribs bearing 

 on their talon a pore of large size. These ribs are separated trans- 

 versely by furrows usually wider than the ribs or by elongated pores 

 forming, by their general ensemble, portions of concentric ellipses 

 appearing to pass below the ribs. The intercostal furrows entirely 

 traverse the zooecium and separate each pair of transverse ribs. 

 Orifice in form of an inverted lyre, deprived of marginal spines. 

 Avicularia unknown. (Translation after Jullien, 1886.) 



Genotype. — Lyrula (Cribrilina) hippocrepis Hincks, 1882. Recent. 



Genus REGINELLA Jullien, 1886 



Zooecia with the frontal formed by voluminous ribs much in relief 

 on the exterior surface, with the pores diminishing in size from the 

 talon of the rib to its extremity; between each pair of ribs transversely 

 is found a furrow often as broad as the rib, at the bottom of which 

 each pore occupies the middle of a calcareous polygonal cell. These 

 intercostal furrows traverse entirely the zooecium and separate com- 

 pletely each pair of transverse ribs. Orifice arched in front with the 

 inferior lip mucronated, marginal spines. Avicularia unknown. 

 (Translation after Jullien, 1886.) 



Genotype. — Reginella {Cribrilina) jurcata Hincks, 1882. Recent. 



Genus STEGINOPORA D'Orbigny, 1851 



Castanoporinae in which there is a tertiary front wall, the "lamina 

 peristomica" of Jullien, largely, if not entirety, formed by the up- 

 growth and lateral expansion of paired apertural avicularia; apertural 

 spines not branched; colony unilamellar" (Lang, 1922). 



Genotype (chosen by Lang, 1916) — Steginopora ornata D'Orbigny, 

 1857. Cretaceous. 



Jullien, 1886 chose as genotype Steginopora ocellata Jullien, 1886, 

 which Lang, 1922 classed in the genus Ubaghsia of Jullien. It is 

 interesting to note the wide divergence of opinion between the 

 authors concerned. 



