BRYOZOA OF THE PHILIPPINE REGION 511 



placed. The avicularia are arranged alternately between the oblique 

 rows of apertures. 



Genotype. — Zeuglopora lanceolata Maplestone, 1909. Recent. 



Discussion. — Maplestone did not note the distal sinus but it does 

 exist. Nor did he see the proximal pore which is quite visible in its 

 usual place as may be observed on our photographs. The avicularia 

 are arranged in the same manner as in Flabellopora as may be noted 

 on our photograph as well as on Maplestone's figure. But the archi- 

 tecture is different, a fact which justifies us in maintaining this 

 curious genus. The series of zooecia are indeed arranged in oblique 

 rows but they are not supported on a zooecium of the initial base. 

 This distinction is essential for it implies a different mode of growth. 

 The lack of material has prevented us from making the necessary 

 sections for further study. 



We believe that Livingstone, 1924, is in error in uniting this genus 

 with Bipora Whitelegge, 1887, regarded as a synonym of Flabellopora 

 D'Orbigny, 1852. 



ZEUGLOPORA LANCEOLATA Maplestone, 1909 



Plate 75, fig. 6 



1909. Zeuglopora lanceolata Maplestone, The results of deep sea investigations 

 in the Tasman Sea, Records of the Australian Museum, vol. 7, p. 272, 

 pi. 78, fig. 11. 



The observations given above on the genus Zeuglopora have been 

 made after an examination of this species so that it is not necessary 

 to repeat them. Our specimens conform to Maplestone's figure, if 

 we consider the details of the surface and the dimensions of the 

 peristome. However the Australian author did not figure the large 

 salient lateral zooecia although he wrote "Under the microscope the 

 crenulated edges of the zoarium are seen to be due to the projecting 

 parts of the marginal zooecia." It is difficult to make determina- 

 tions without comparison of actual specimens. The interior view 

 shows that the lateral zooecia are larger than the axial zooecia. As 

 the lateral zooecia are not placed exactly in the meridian plane of 

 the colony, the meridian section shows inevitably on its sides cells 

 of the two faces. 



Occurrence. — 



D. 5574. Simaluc Island, north of Tawi Tawi; 5° 30' 45" N.; 



120° 07' 57" E.; 340 fathoms. 

 Tasman Sea, 80 fathoms, (Maplestone). 



Plesioty pes. —Cat. No. 8323, U.S.N.M. 



