BRYOZOA OF THE PHILIPPINE REGION 147 



ccurrence. — 

 D. 5137. Jolo Light, Jolo; 6° 04' 25" N.j 120° 58' 30" E.; 20 



fathoms; S., Sh. 

 D. 5141. Jolo Light, Jolo; 6° 09' N.; 120° 58' E.; 29 fathoms; 



co. S. 

 D. 5145. Jolo Light, Jolo 6° 04' 30" N.j 120° 59' 30" E.; 23 



fathoms; co. S., Sh. 

 D. 5151. Sirun Island, Sulu Archipelago, Tawi Tawi Group; 



5° 24' 40" N.J 120° 27' 15" E.; 24 fathoms; co. 



S., Sh. 

 D. 5174. Jolo Light, Jolo; 6° 03' 45" N.J 120° 57' E.; 20 



fathoms; crs. S. 

 D. 5574. Simaluc Island, north of Tawi Tawi; 5° 30' 45" N.; 



120° 07' 57" E.; 340 fathoms; 11° C. 

 Plesiotypes — -Cat. Nos. 7946-7948, U.S.N.M. 



Geographic occurrence. — South of Halmaheira (Djilolo), Malay- 

 region 45 meters (Harmer). 



Genus LABIOPORELLA Harmer, 1926 



No ovicell; distinct raised margins; frontal wall of polypide tube 

 not quadrangular and not surrounded by projecting flanges ( = poly- 

 pidian lamella). Polypide tube bilabiate, on either side connected 

 with the lateral wall by a vertical calcareous lamina; multiporous 

 septulae (Levinsen). Mandible chitinous and spatulate. 



Genotype. — Labiopora crenulata Levinsen, 1909. Recent. 



Range. — Miocene (Burdigalian) — Recent. 



The known species of this genus are as follows : 



Labioporella crenulata Levinsen, 1909 Philippines, Malay region. 



Labioporella {Membranipora) bursaria MacGillivray, 



1879 Pacific. 



Labioporella cornuta Harmer, 1926 Australia, Malay region. 



Labioporella thorneleyae Harmer, 1926 Ceylon. 



Labioporella spatulata Harmer, 1926 Malay region. 



Labioporella sp. (Duvergier) Miocene (Burdigalian). 



Labioporella altavilla Cipolla, 1920 Pliocene. 



Labioporella miocenica Canu and Bassler, 1919 Miocene. 



Labioporella adeliensis Livingstone, 1928 Australia. 



Levinsen erroneously assigned this genus to the Aspidostomidae 

 although he noted the absence of the ovicell. The new study of the 

 genotype made by us as well as comparison with living specimens of 

 Siphonoporella collected in the Gulf of Mexico has led us to introduce 

 it into the Steganoporellidae. Nevertheless Harmer, 1926 considers 

 it as the single genus of his new family Labioporellidae. The larvae 

 being unknown, the creation of the two families Labioporellidae and 

 Siphonoporellidae appears unjustified because Labioporella and 



