206 



BULLETIN 100, UNITED STATES NATIONAL MUSEUM. 



portion of the chamber and becoming obsolete toward each end, 

 neck long, swollen toward the top; then again rapidly contracted to 

 the aperture; in the early chambers the neck with costae, in later 

 ones with the costae limited to the last tapering por- 

 tion near the aperture. 

 Length, up to 3.5 mm. 



Distribution. —Type specimens (U.S.N.M. No. 9116) 

 from Albatross station D5201, in 554 fathoms (1,012 

 meters), Sogod Bay, southern Leyte Island, bottom 

 temperature, 52.8° F. (11.5° C). 



Specimens were frequent at the type station, also 

 at D5259, in 312 fathoms (571 meters), off north- 

 western Panaj^, bottom temperature, 49.3° F. (9.6° C.) ; 

 D5371, in 83 fathoms (151 meters), vicinity of Marin- 

 duque Island; and D5538, in 256 fathoms (468 meters), 

 between Negros and Siquijor, bottom temperature, 

 53.3° F. (11.8° C). 



This species very quickly loses its close-set character, 

 Fig. 8.— Nodosa- ])■^J^l ^^^q ^^^^1 occasionally three chambers being so ar- 



RU PAUCILOCU- IP 1 • 1 1 1 1 , 



ranged, after which the chambers are at once remote. 

 The costae, limited to the middle area of the chamber 

 and the very characteristic shape of the apertural neck, 

 are distinguishing characters. It is usually mucronate 

 at the apical end. A young stage with three chambers 



is shown, as well as two adult five-chambered specimens, one with 



three, the other with two close-set early chambers. 



Nodosaria pauciloculata — Material examined. 



LATA, VAE. LUZO- 

 NENSIS, NEW VA- 

 RIETY. Front 

 VIEW, X 100. 

 From station 

 D5220. 



NODOSARIA PAUCILOCULATA Cashman. var. LUZONENSIS, new variety. 



Description. — Test differing from the typical in having three 

 closely set chambers followed by a single one, somewhat remotely 

 placed; earlier chambers without the neck costae continuous. 



Distribution. — Type specimen (U.S.N.M. No. 15288), from Albatross 

 station D5220, between Marinduque and Luzon, 50 fathoms (91 

 meters) . 



