38 



BULLETIN 71, UNTTED STATES NATIONAL MUSEUM. 



smooth except for the apical end which may be slightly costate; 

 aperture long and narrow, bordered by a raised lip formed by the 



flange bordering the chamber; color 

 white. 



Length 0.75-1.00 mm. 

 Distribution. — Bagg described this 

 species from 

 two specimens 

 from Albatross 

 station H4555, 

 in 1,398 fath- 

 oms, near the 

 Hawaiian Is- 

 1 a n d s . The 

 type-specimen 

 is figured here; 

 the other was 

 not seen. 



I have had a 

 single specimen 

 from Nero sta- 

 tion 2034, in 175 



fathoms, also off the Hawaiian Islands. Tt is figured here. Appar- 

 ently it is a younger and less developed specimen of this same species, 

 with the apical portion slightly 

 costate. 



BOLIVINA SCHWAGERIANA H. B. Brady. 



Bolivina schwageriana H. B. Brady, 

 Quart. Journ. Micr. Sci., vol. 21, 

 1881, p. 58; Rep. Voy. Challenger, 

 Zoology, vol. 9, 1884, p. 425, pi. 

 53, figs. 24, 25. — Millett, Journ. 

 Roy. Micr. Soc, 1900, p. 547, pi. 

 4, fig. 10. 



Figs. 61-62.— Bolivina semuxata. x 75. 01, type-specimen. 02, another 



MORE REGULAR SPECIMEN FROM THE SAME REGION. 



£ 







X 



Fig. 03.— Bolivina schwageriana. x 05. a, apertural view; b, front view. 



Description. — Test broad, a little longer than wide, compressed, 

 thickest in the median line, thence curving gently to the carinate mar- 



