BRYOZOA OF THE PHILIPPINE REGION 145 



1927. Steganoporella magnilabris Canu and Bassler, Bryozoaires des lies Hawai, 



Bull, dc la Society des Sciences de Seine-et-Oise, fasc. 7, p. 8, pi. 2, figs. 

 5, 6 (Biology and geographic distribution). 



1928. Steganoporella magnilabris Canu and Bassler, Fossil and Recent Bryozoa 



of the Gulf of Mexico Region, Proc. U. S. National Museum, vol. 72, 

 art, 14, p. 64, pi. 7, figs. 8-10, pi. 32, fig. 6. 



All of our specimens were dead and we have been unable to make 

 many observations. We cite only a case of opesiular calcification. 



We still do not know the mode of fixation of this species; it is in 

 effect quite widespread but seldom abundant in one locality. It 

 lives especially at depths of 30 to 50 meters but it can descend much 

 lower. Its presence in the fossils does not have a great bathymetric 

 significance. 

 Occurrence. — 



D. 4807. Cape Tsiuka, Sea of Japan; 41 ° 36' 12" N.; 140° 36' E. 

 D. 5132. Off Panabutan Pt., Sulu Sea, west of Mindanao; 26 



fathoms; gn. M., S. 

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



fathoms; S. Sh. 

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



co. S. 

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



23 fathoms; co. S., Sh. 

 D. 5147. Sulade Island, Sulu Archipelago; 5° 41' 40" N.; 120° 



47' 10" E.; 21 fathoms; co. S., Sh. 



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



5° 24' 40" N.; 120° 27' 15" E.; 24 fathoms; co. S.,Sn. 



D. 5162. Tinagta Island, Tawi Tawi Group; 5° 10' N.; 119° 



47' 30" E.; 230 fathoms; S. brk., Sh. crs.; 11.6° C. 



D. 5311. China Sea, vicinity Hong Kong; 21° 33' N.; 116° 15' 



E.; 88 fathoms; crs. S., Sh. 



D. 5579. Sibutu Island, Darvel Bay, Borneo; 4° 54' 15" N.j 



119° 09' 52" E.; 175 fathoms; fine S., co.; 13° C. 



D. 5580. Sibutu Island, Darvel Bay, Borneo; 4° 52' 45" N.; 



119° 06' 45" E.; 162 fathoms; br. S., co.; 13.2° C. 



Plesiotypes.—Q&L Nos. 7943-7945, U.S.N. M. 



STEGANOPORELLA MANDIBULATA Hanner, 1926 



Plate 15, figs. 3, 4 



1926. Steganoporella mandibulata Harmer, Polyzoa "Siboga" Expedition, 

 p. 279, pi. 16, fig. 20; pi. 17, fig. 4. 



Description. — The zoarium is unilamellar or encrusts nullipores 

 and shells. The zooecia are distinct, separated by a furrow, large, 

 elongated, elliptical; the mural rim is thin, salient, enlarged into a 

 dome in its proximal portion; the cryptocyst is small, transverse^ 



