BRYOZOA OF THE PHILIPPINE REGION 331 



Biology. — This species was in complete fixation (ancestrulated) on 

 February 18, 1908 (44 meters). 

 Occurrence — 



D. 5144. Jolo Light, Jolo; 6° 05' 50" N.; 121° 02' 15" E.; 19 



fathoms; co. S. 

 D. 5151. Sirun Island, Sulu Archipelago; 5° 24' 40" N.; 120° 



27' 15" E.; 24 fathoms; co. S., Sh. 

 D. 5577. Mount Dromedario, Tawi Tawi; 5° 20' 36" N.; 119° 

 58' 51" E.; 240 fathoms; crs. S.; 12.4° C. 

 Geographic distribution. — Pacific; Sow-and-Pigs Reef, 3-4 fathoms; 

 Port Jackson, 10 fathoms; Green Point, Australia; Murray Island, 

 Torres Strait, 15-20 fathoms. 

 Plesiotypes.— Cat. Nos. 8101, 8102, U.S.N. M. 



Genus MICROPORELLA Hincks, 1877 



MICROPORELLA CILIATA Linnaeus, 1759 



Plate 40, figs. 2-4 



1852. Porina africana D'Orbigny, Paleontologie francaise, Terrain Cretace, 

 vol. 5, p. 434 (fide Waters 1905). 



1852. Reptescharellina armata D'Orbigny, Paleontologie francaise, Terrain 

 Cretac6, vol. 5, p. 453 (fide Waters, 1905). 



1918. Microporella ciliata Waters, Bryozoa Littoral Marine Fauna of the Cape 

 Verde Islands, Linnean Society Journal, Zoology, vol. 34, p. 23 (bibli- 

 ography) . 



1923. Microporella ciliata Canu and Bassler, North American Later Tertiary 

 and Quaternary Bryozoa, Bull. 125, U. S. National Museum, p. 119, 

 pi. 20, figs. 1-6; pi. 36, figs. 4, 5. (Bibliography and geologic distribu- 

 tion.) 



This cosmopolitan species is not rare but its biology is still un- 

 known. Certainly assembling the numerous published works on the 

 species some important notes will be made. 



Biology. — Our living specimens indicate that they were in repro- 

 duction and fixation during the months of February and March, 

 1908 (36-37 meters). The peristome which developed around the 

 ascopore is quite variable according to the localities; our specimens 

 with it most salient came from Hong Kong. 

 Occurrence. — 



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



fathoms; S. Sh. 

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



co. S. 

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



120° 47' 10" E.; 21 fathoms; co. S., Sh. 

 D. 5179. Romblon Light; Romblon; 12° 38' 15" N.; 122° 12' 



30" E.; 37 fathoms; hard S.; 24.2° C. 

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

 15' E.; crs. S., Sh. 

 Plesiotypes.— Cat. Nos. 8103-8106, U.S.N.M. 



