BRYOZOA OF THE PHILIPPINE REGION 359 



TUBUCELLARIA FILIFORMIS, new species 



Plate 44, figs. 10-13 



Description. — The zoarium is articulated; the segments are regular, 

 rectilinear or a little curved, filiform. The zooecia are little distinct, 

 elongated, fusiform; the frontal is somewhat convex and covered with 

 short linear tremopores; the spiramen, little salient, is placed at the 

 middle of the zooecial length. The peristomico is orbicular, oblique, 

 salient only in its proximal portion. The base of the joints is large, 

 orbicular, adjacent to the peristome and placed on the peristomie. 



\Lz -0.80-0.90 mm. 



Measurements. — Zooecia^ , 



Uz=0.30 mm. 



Diameter of peristome, 0.14 mm.; length of segments, 0.90; and 

 diameter of segments, 0.40-0.50. 



Affinities. — The basis ramae is placed as in Tubucellaria exilis; it is 

 a large orbicular unpartitioned orifice placed on the peristomie and 

 adjacent to the peristome. The present species differs from that 

 mentioned, in its oblique peristomice, its smaller micrometric meas- 

 urements, and its shorter frontal pores. 



Biology. — Single segments only have been dredged; they were dead 

 and nonovicelled. The geographic distribution from the China Sea 

 to the Pacific, appears very large. 

 Occurrence. — 



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



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

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



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

 D. 5235. Nagubat Island, east coast of Mindanao; 9° 43' N.; 



125° 48' 15" E.; 44 fathoms; sft. M. 

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

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

 Cotypes — Cat. No. 8142, U.S.N.M. 



Family RETEPORIDAE Smitt, 1867 



Descriptions and illustrations of this family and most of its genera 

 are contained in our 1920 work. The following notes on the biology 

 of the Reteporidae are added to supplement our previous discussion. 



The genera of this family may be classified in two sections as 

 follows: 



I. Retepora Imperato, 1599 (Subgenera: Reteporella Busk, 1884; 

 Sertella Jullien, 1903); Schizellozoon Canu and Bassler, 1917; Triphyl- 

 lozoon Canu and Bassler, 1917; Hippettozoon Canu and Bassler, 1917; 

 Phidolopora Gabb and Horn, 1862; Rhynchozoon Hincks, 1891 

 (Rhynchopora Hincks, 1877, preoccupied); Lepraliella Levinsen, 1909; 

 Schizotheca Hincks, 1877. 



