BRY0Z04 OF THE PHILIPPINE REGION 501 



D. 51G2. Tinagta Island; 5° 10' N.J 119° 47' 30" E.; 230 



fathoms; S. brk., Sh. crs.; 11 6° C. 

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



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

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

 119° 09' 52" E.; 175 fathoms; fine S. Co. 

 According to Waters 1905 the specimen in the Paris Museum is 

 from Malacca. D'Orbigny has, however, cited Ouantang and Hainan, 

 20 meters, in the China Sea. 



Plesiotype. —Cat. Nos. 8300-8303, U.S.N.M. 



FLABELLOPORA ARCULIFERA, new species 



Plate 72, fig. 12 



Description. — The zoarium is free, lanceolate; the angle of the initial 



base is somewhat larger than the terminal angle; the zoarial length 



is 4 mm. The exterior walls of the zooecia are decorated with a 



hexagonal area with rounded and salient ribs in form of a cushion; 



each area contains the aperture and a large distal avicularium with 



pivot with the beak turned toward the ancestrula; another identical 



avicularium is lodged between the areas. The aperture is orbicular 



and bears a distal semicircular sinus; the peristome is salient; the 



proximal pore is small and surrounded by a peristome adjacent to 



that of the aperture. 



,, . . \ha = 0.l0 mm. 



Measurements. — Aperture , n •„ _ 



r [ la = 0.10 mm. 



Affinities. — This new species differs from Flabellopora elegans 

 D'Orbigny, 1852, in its smaller frontal areas with thicker walls and 

 in the presence of avicularia between them. 



Occurrence. — D. 5579. Sibutu Island, Darvel Bay, Borneo; 4° 54' 

 15" N.; 119° 09' 52" E.; 175 fathoms; fine S., Co. 



Holotype.—C&t. No. 8304, U.S.N.M. 



FLABELLOPORA TUBEROSA, new species 



Plate 74, figs. 4-6 



Description. — The zoarium is free, amygdaloidal or lanceolate (5 

 mm.); the angle of the initial base is much larger than the terminal 

 angle. The exterior walls of the superior central zooecia are decorated 

 with a deep flabelliform area; each area contains a subdistal aperture, 

 a distal elliptical, transverse avicularium with pivot and a proximal 

 avicularium; between the areas arc arranged tuberosities formed by 

 the union of a distal avicularium, a proximal one and two small 

 triangular erect avicularia. The lateral zooecia are poriferous. The 

 aperture is suborbicular, very little elongated; the distal sinus is wide 

 and triangular; the peristome is thin and salient; the proximal pore 

 is very small and adjacent to the periston i*'. 

 2182—29 33 



