FORAMINIFERA OF THE PHILIPPINE AND ADJACENT SEAS. 217 

 / . . . 



typically with a thin and narrow keel irregular at the edge or where 

 well developed with several sharp toothlike processes; early cham- 

 bers usually somewhat coiled, later ones typically bilateral and nar- 

 row not changing greatly in height, sutures usually nearly flush, 

 of slightly clearer shell material; specimens occasionally flabelline 

 throughout, last-formed chamber often with a square edge, with the 

 peripheral angles slightly raised and the apertural end projecting in 

 a slight knob, somewhat rounded; surface for the most part smooth 

 and polished, the earlier chambers, however, typically ornamented 

 with a series of irregular knobs or bosses with numerous irregular, 

 short raised costae, running generally lengthwise of the test; aper- 

 ture radiate, terminal. 



Length up to 6 mm. 



Distribution.— Type specimen (U.S.N.M. No. 15327) from D5201, 

 Sogod Bay, southern Leyte Island, 554 fathoms (1,012 meters), bottom 

 temperature 52.8° F. (11.5° C). It has also occurred in the following 

 localities: D5259, off nortb.vestern Panay; D5300, China Sea, vicinity 

 southern Luzon; D5301, same locality, 208 fathoms (381 meters); 

 D5425, Jolo Sea; D5429, eastern Palawan and vicinity; D5449, 

 east coast of Luzon, San Bernardino Strait to San Miguel Bay. 



Fwndicularia philippinenais — Material examined. 



FRONDICULARIA ANNULARIS d'Orbigny. 



Plate 39, fig. 5. 



Frondicularia annularis d'ORBiGNY, Foram. Foss. Vienne, 1846, p. 59, pi. 2, figs. 

 44-i7. 



Description. — Test oval, much compressed, greatest width at the 

 base, proloculum oval or elliptical, next few chambers not extending 

 back as far as their predecessors, but soon equaling or exceediHg the 

 length backward; outer angle very broadly rounded, apertural end 

 squarely truncated or sometimes with a projecting or rounded aper- 

 tural knob; sutures but slightly depressed; early portions of test 

 with numerous fine longitudinal raised costae parallel to the long 

 axis of the test; remainder of the test smooth and polished. 



Length equal to the diameter, about 3 nmi. 



