66 BULLETIN 100, UNITED STATES NATIONAL MUSEUM 



Occurrence. — D. 5217. Anima Sola Island between Burias and 

 Luzon; 13°20'N.; 123° 14' 15" E.; 105 fathoms; crs.gy.S.; 10.1° C. 

 Holotype.— Cut. No. 7839, U.S.N.M. 



MEMBRANIPORA BARTSCHI, new species 



Plate 3, figs. 9-11 



Description. — The zoarium is free, quadrangular, bifurcated. The 

 zooecia are distinct, separated by a furrow, large, elongated, elliptical; 

 the mural rim is thin, salient; the cryptocyst is small smooth, some- 

 what convex. The opesium is large, elliptical, bordered by a cushion 

 enlarged at the base and united to the mural rim on the sides. 



Measurements. — 



Ope S ium(^ = - 60 mm - Zooeciaj^ - 90 - 1 - 00 mm " 



\lo = 0.26 mm. \lz = 0.40 mm. 



Affinities. — We believe this rather rare species should be described 

 because of its originality and of its similar appearance to that of 

 many of the Cretaceous fossils of the zoarial group called Biiiustra 

 by authors. Unfortunately we have not seen the ovicell and the 

 number of specimens is not sufficient to prove that it does not exist. 

 The specific name is in honor of Dr. Paul Bartsch, whose collections 

 in the Philippine waters have made the present work possible. 



There are five uniporous septulae on the lateral walls. Belonging 

 to the same group, there is in the Cretaceous, Biiiustra variabilis 

 D'Orbigny, 1852. 



Occurrence. — D. 5230. Limasaua Island, between Bohol andLeyte; 

 10° 01' 50" N.; 124° 42' 30" E.; 118 fathoms; gy. S.; 14.3° C. 



Cotypes.—Cht. No. 7840, U.S.N.M. 



Genus ACANTHODESIA Canu and Bassler, 1920 



ACANTHODESIA SAVARTH Savigny-Audouin. 1826 



Plate 1, figs. 1-5 



1920. Acanthodesia savarti Canu and Bassler, North American Early Tertiary 



Bryozoa, Bull. 106, U. S. National Museum, p. 100, pi. 21, figs. 2-4. 



(Bibliography, geologic and geographic distribution.) 

 1821. Acanthodcsia savarti Duvergier, Note sur les Bryosoaires du Neogene 



de l'Aquitaine, Actes de la Societ6 linneene de Bordeaux, vol. 22, p. 8. 

 1923. Acanthodesia savarti Canu and Bassler, North American Later Tertiary 



and Quaternary Bryozoa, Bull. 125, U. S. National Museum, p. 31, 



pi. 11, figs. 1-3. (Paleontologic bibliography.) 

 1926. Acanthodesia savariii Harmek, Polyzoa Siboga Expedition, p. 213, pi. 



13, figs. 8, 13, 14, 16 (recent bibliography). 



Variations. — The bibliography of this species was given by Waters 

 in 1909 and we completed it in 1920. In 1923 we printed the paleon- 

 tological bibliography and tried to put some order among the 

 numerous fossil forms, the determination of which remains always 

 quite difficult. Finally in 1926 Harmer gave the recent bibliography. 



