BRYOZOA OF THE PHILIPPINE REGION 357 



TUBUCELLARIA FUSIFORMIS D'Orbigny, 1848 



Plate 44, figs. 3, 4 



1848. Tubucellaria fusiformis D'Orbigny, Paleontologie francaise, Terrains 



cr6taces, vol. 5, p. 337. 

 1907. Tubucellaria fusiformis Waters, Tubucellaria its species and ovicells, 



Linnean Society Journal, Zoology, vol. 30, p. 131, pi. 15, figs. 1-3, 14. 

 1913. Tubucellaria fusiformis Waters, Bryozoa from British East Africa and 



Zanzibar Proceedings Zoological Society London, p. 512. 



\Lz =2.20 mm. 



Measurements. — Zooecia , 



Uz=0.75 mm. 



Diameter of peristome, 0.30 mm.; length of segments, 10.00 mm.; 

 and diameter of segments, 0.80 mm. 



Variations. — Our specimens correspond rigorously to the figure of 

 Waters, 1907, and to D'Orbigny 's specimen. Their micrometric 

 dimensions are a little smaller by only a few hundredths millimeters. 

 The base of a segment is elongated, with peduncle. The peduncle 

 is partitioned in the interior and contains a base of four zooecia. 

 The fibers of articulation are thus divided into four bundles corres- 

 ponding to each interpartitional space. Somewhat higher each 

 segment bears 6 longitudinal rows of zooecia. 



Biology. — Our specimens were dead and nonovicelled. This 

 species is peculiar to the Tropical Zone and to the Indian Ocean. It 

 penetrates into the China and Sulu Seas. The great bathymetric 

 distribution probably permits it to pass into the Pacific where it may 

 be found some day. Moreover, the variety areolata MacGillivray, 

 1895 of Tubucellaria cereoides, an Australian fossil, appears much 

 closer to the present species. 

 Occurrence. — 



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



47' 10" E.; 21 fathoms; co. S. Sh. (common). 

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



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

 D. 5580. Sibutu Island, Darvel Bay, Borneo; 4° 52' 45" N.; 119° 

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

 Geographic distribution. — Indian Ocean: Chuaka, Zanzibar, 3 

 fathoms, Wasin, British East Africa, 10 fathoms; Marie Louise, 

 Amirantes Island, 17 fathoms; Straits of Malacca. 

 Plesiotypes.— Oat. No. 8138, U.S.N.M. 

 2182—29 24 



