548 BULLETIN 100, UNITED STATES NATIONAL MUSEUM 



according to the different sections which we published (Canu and 

 Bassler 1920, pi. 114). The narrowest pertain to the type and to 

 the present species. The ovicell has not been discovered. (See text 

 fig. 221.) 



Affinities. — This species differs from Pleuronea decorata in its very- 

 convex dorsal ornamented by longitudinal stria % tions. 

 Occurrence. — 



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



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

 D. 5219. Mompog Island, between Marinduque and Luzon; 13° 

 21' N.; 122° 18' 45" E.; 530 fathoms; gn. M.; 

 10.4° C. 

 D. 5577. Mount Dromedario, north of Tawi Tawi; 5° 20' 36" 

 N.; 119° 58' 51" E.; 240 fathoms; crs. S.; 12.4° C. 

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

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

 Cotypes — Cat. No. 8402, U.S.N. M. 



Genus PLATONEA Canu and Bassler, 1920. 



PLATONEA PHILIPPSAE Harmer, 1915 



Plate 85, figs. 4, 5 



1915. Replotubigera philippsae Harmer, Polyzoa of Siboga Expedition, Mon. 

 28, Results Explorations Siboga, p. 120, pi. 10, fig. 9. 



Measurements. — Diameter of peristome, 0.08 mm.; diameter of 

 tubes, 0.12; distance of fascicles, 0.16-0.20 mm.; and number of 

 tubes to fascicle, 3. 



Our specimens correspond well to the measurements and the figure 

 of Harmer; they are a little shorter than those from Siboga. They 

 encrust shells. 

 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. 

 Siboga Station 310; 8° 30' S.; 119° 07' E.; 73 meters (Harmer); 

 Sifu, Loyalty Islands (Harmer). 

 Plesiotype.—C&t. No. 8416, U.S.N.M. 



PLATONEA HIRSUTA Canu and Bassler, 1922 



Plate 85, fig. 14 



1922. Platonea hirsuta Canu and Bassler, Studies on Cyclostomatous Bryozoa, 

 Proc. U. S. National Museum, vol. 61, p. 49, pi. 11, figs. 6, 7. 



Description. — The zoarium has the Idmonea form of growth, some- 

 what enlarged at the bifurcations. The fascicles are salient, close 

 together, alternate or opposite, formed of 3 or 4 tubes. The tubes 



