12 BULLETIN 161, UNITED STATES NATIONAL MUSEUM 



Car Nicobar. They are from Albatross Stations H3900, midway 

 between Hikueru and Marokaii, in 1,372 fathoms, and H3954, west 

 end of Nomuka Island, 33° N., 6 miles E., in 600 fathoms. 



DENTALINA SIDEBOTTOMI, new species 



Plate 3, Figure 4 



Nodosaria radicula Sidebottom (not Linnaeus), Journ. Roy. Micr. Soc, 1918, 

 pi. 4, figs. 1-5. 



Test elongate, very slightly tapering, not compressed, slightly 

 curved; chambers distinct, somewhat inflated, increasing somewhat 

 in length as added, the diameter nearly uniform thi'oughout; sutures 

 distinct, very slightly oblique, limbate; wall translucent, smooth, very 

 finely perforate; aperture radiate, terminal, at the peripheral angle. 

 Length of holotype, 0.8 mm; diameter, 0.15 mm. 



Holotype.—V.S.t^.M. No. 22158, from Albatross Station H3815, 

 latitude 15° 15' S., longitude 147° 51' 35" W., in 524 fathoms. 



This species was figured by Sidebottom in his South Pacific paper in 

 the above reference. It seems to be a distinct one in the South Pacific, 

 and can be distinguished by its strongly limbate depressed sutures, 

 the gradual increase in the length of the chambers, and the general out- 

 line. It is probably to be found rather widely distributed in the South 

 Pacific in comparatively deep water. 



DENTALINA POMUUGERA Stache 



Plate 3, Figure 7 



Dentalina pomuligera Stache, Novara-Fixped., Geol. Theil, vol. 1, p. 204, pi. 22, 

 fig. 31, 1864. 



Test elongate, curved, tapering, especially in the early portion; 

 chambers distinct, the earlier ones only slightly inflated, later ones 

 much inflated and very distinct, the earlier ones rapidly increasing in 

 size as added, those of the later portion of uniform diameter and chang- 

 ing but little in size as added; sutures very strongly limbate, the earlier 

 ones only slightly depressed, later ones very strongly so; wall smooth, 

 very finely perforate; aperture terminal, radiate, very slightly pro- 

 jecting. Length, 1.9 mm; diameter, 0.25 mm. 



This species seems to be similar to that described by Stache from 

 the Tertiary of New Zealand. A similar form has also been figured by 

 Koch from the Tertiary of the Pacific. Our figured specimen is from 

 Albatross Station H3866, latitude 17° 17' S., longitude 145° 45' 30" 

 W., in 804 fathoms. 



DENTALINA ELEGANS d'Orbigny 



Plate 3, Figure 8 



The large figured specimen seems best referred to this species of 

 d'Orbigny. It has a length of 5 mm and a diameter of 0.35 mm. 



