96 



bi:tllp:tin 104, united states national, museum. 



Description. — Test ovate, broadest above the middle, composed of 

 numerous inflated chambers, the remainder of the test consisting 

 of longitudinal plate-like costae, confluent from the apex to the base 

 of the last-formed chamber; chambers distinct, inflated, smooth 

 except for the longitudinal costae; sutures distinct, somewhat de- 

 pressed, wall in young specimens thin and translucent, in the adults 

 thickened and opaque; aperture a loop-like opening of the inner 

 margin of the chamber with a definite margined lip; color white. 



Length 0.30-0.75 mm. 



Distribution. — This has proved to be much rarer than most of the 

 other species of the genus in the Albatross material from the western 

 Atlantic. It has occurred at two stations off the continental shelf 

 at about 40° N., at one station ofl^ the eastern coast of Florida, at two 

 in the northern part of the Gulf of Mexico, and at three stations in 

 the eastern part of the Caribbean. Brady's Atlantic records are 

 two stations north of the Lesser Antilles, two stations off the Azores, 

 one off the Canaries, and another off the coast of Brazil. Neither 

 Goes or Flint record the species. 



There are a very few stations in the eastern Atlantic southwest of 

 Ireland, in 48 to 750 fathoms (87 to 1,370 meters). Pearcey records 

 it in the South Atlantic in 742 fathoms (1,357 meters) and mentions 

 it as ''common in the North Atlantic, from latitude 60° to the Equa- 

 tor, 150 to 1,675 fathoms (274 to 3,063 meters)." There are numer- 

 ous records for the species in the South Pacific. Brady's original 

 specimens were from the Miocene of the Vienna Basin. I have 

 found it from the Miocene of the Coastal Plain in Virginia, and Chap- 

 man records it from the Pliocene of California. It is known from 

 the Tertiary in various places. 



Bulimina buchiana — material examined. 



BULIMINA ACULEATA d'Orbigny. 



Plate 22, figs. 1, 2. 



Polijvinrpha fhuiformis Soldani, Testaceographia, vol. 1, pt. 2, 1791, p. 118, pi. 

 127, fig. 1; pi. 130, fig. vv. 



Bulimina aculeata d'Orbiony, Ann. Sci. Nat., vol. 7, 182G, p. 269.-11. B. Bn.^DV, 

 Rep. Voy. ChalUnger, Zoology, vol. 9, 1884, p. 406, pi. 51, figs. 7-9.— B.^lk- 

 wiLL and Wright, Trans. Roy. Irish Acad., vol. 28, 1885, p. 334.— II. B. 



