42 



BULLETIN 71, UNTTED STATES NATIONAL MUSEUM. 



BOLIVINA HANTKENIANA H. B. Brady. 



Bolivina hantkeniana H. B. Brady, Quart. Joum. Micr. Sci., vol. 21, 1881, p. 

 58; Rep. Voy. Challenger, Zoology, vol. 9, 1884, p. 424, pi. 53, figs. 16-18 — 

 Eggeb, Abh. kon. bay. Akad. Wiss. Munchen, CI. n, vol. 18, 1893, p. 296, 

 pi. 8, figs. 40-42.— Millett, Joum. Roy. Micr. Soc, 1900, p. 546, pi. 4. fig. 9.— 

 BacxO, Proc. U. S. Nat. Mus., vol. 34, 1908, p. 137. 



Description.— Test broad, much compressed, usually completely 

 surrounded except at the aperture by a broad wing-like flange, 



either entire or variously lobed ; chambers 

 inflated somewhat; sutures very distinct, 

 slightly depressed; wall calcareous, with 

 a few short longitudinal costaB, usually 

 confined to the limits of the chamber on 

 which they originate; aperture narrow, 

 oval, with a single tooth-like projection 

 in the orifice; color, white. 



Length 0.60-0.S4 mm. 



Distribution. — This species is recorded 

 by Bagg from several Albatross stations 

 in the vicinity of the Hawaiian Islands. 

 While some of these specimens have the 

 characters of this species, others I should 

 refer to B. beyrichi, var. alata, and to 

 B. semialata. 



The only specimen I have which can 

 without doubt be this species is from 

 Albatross station D4970, in 500 fathoms, 

 off the southern coast of Japan. 



Brady's specimens were all from the 

 Indo-Pacific region, and apparently this 

 is a species limited to the warmer re- 

 gion from Australia northward, includ- 

 ing the oceanic islands. This is the 

 range of a large number of our species. 



Fig. 08.— Bolivina hantkentana. 



X 60. a, APERTURAL VIEW; b, 

 FRONT VIEW. 



BOLIVINA AMYGDAL^FORMIS H. B. Brady. 



Bolivina amygdalseformis H. B. Brady, Quart. Joum. Micr. Sci., vol. 21, 1881, 

 p. 59; Rep. Voy. Challenger, Zoology, vol. 9, 1884, p. 426, pi. 53, figs. 28, 29. 



Description. — Test oval, compressed, the apical end round-pointed, 

 the apertural end broadly rounded; chambers few, the sutures mostly 

 hidden by the exterior ornamentation of the test, but showing slightly 

 as darker lines; wall calcareous, ornamented by longitudinal costse 

 variously branching and anastomosing; terminal chamber, or some- 

 times the last two, nearly smooth, except for slight costaB at the 

 lower border of the chamber, conspicuously and rather coarsely 



