BRYOZOA OF THE PHILIPPINE REGION 353 



Biology. — This is a deep-water species in the Philippines and a 

 littoral one in South America; it appears therefore more sensible to 

 temperature than to hydrostatic pressure. 

 Occurrence. — 



D. 5217. Anima Sola Island, between Burias and Luzon; 13° 

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

 D. 5577. Mount Dromedario, Tawi Tawi; 5° 20' 36" N.J 

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

 Geographic distribution. — Hoste Island, Orange Bay, Cape Horn 

 (Jullien). 

 Plesiotype.—C&t. No. 8132, U.S.N.M. 



Genus PALMICELLARIA Alder, 1864 



PALMICELLARIA(?) CORONOPUS, new species 



Plate 43, figs. 2, 3 



Only the superb specimen figured has been found. As it appears 

 to belong to a new genus we prefer to delay detailed description until 

 the discovery of its ovicell and operculum. 



Occurrence— D. 5634. Gomomo Island, Pitt Passage; 1° 54' 00" 

 S.; 127° 36' 00" E.; 329 fathoms. 



Holotype.—C&t. No. 8135, U.S.N.M. 



Genus RHAMPHOSTOMELLA Lorenz, 1886 



RHAMPHOSTOMELLA SOLLERS, new species 



Plate 43, figs. 4-10 



Description. — The zoarium is unilamellar; the fronds are large and 

 flat. The zooecia are distinct, separated by a deep furrow, very 

 large, little elongated, swollen, the frontal is quite convex and formed 

 of a pleurocyst with scattered granules supported by a very thin 

 olocyst; the areolar pores are large and triangular; the interareolar 

 costules are thin, very long, radial and converge towards an avicu- 

 larian umbo placed eccentrically on the proximal border of the 

 apertura. The apertura is large, transverse, trapezoid; the vesti- 

 bular arch is smooth and little visible; the peristome is thin, non- 

 salient, surrounded with a pleurocystal peristome very irregularly 

 developed. The ovicell is large, very convex, covered by scattered 

 granules, never closed by the operculum. On the frontal there is 

 frequently developed a large elliptical avicularium with very large 

 and convex chamber; the orifice is terminal, elliptical, with pivot. 

 The operculum is thin and fragile. On the inferior face of the fronds 

 there are small scattered granules. (See text fig. 139.) 



Measurements. — 



A . f/ta-0.25 mm. -_ • (Lz-=0.90 mm. 



Apertura, „ ' Zooecia, n ._ 



[la -0.35 mm. \lz -=0.65 mm. 



