194 ALLAN HANCOCK PACIFIC EXPEDITIONS VOL. 6 



broadly elliptical, with a slight lip. Length up to 0.75 mm.; breadth 0.30 

 mm.; thickness 0.10 mm. 



The types of this species are from the Miocene. 



The specimen here figured from Station 1062 seems to be a recent 

 one. There are two specimens from Station C-1 1 that are probably washed 

 out from fossil beds as is indicated by the peculiar appearance of the wall 

 and the broken edges. Abundant specimens from Station 1003 may also 

 be fossils. 



Distribution. — These records are off the coast of southern California 

 in shallow water. 



Bolivina interjuncta Cushman 

 Plate 23, Fig. 12 



Bolivina costata d'Orbigny, var. interjuncta Cushman, Contr. Cush- 

 man Lab. Foram. Res., vol. 2, pt. 2, 1926, p. 41, pi. 6, fig. 3. — Cushman 

 and Moyer, i.e., vol. 6, 1930, p. 57. 



Bolivina interjuncta Galloway and Wissler, Journ. Pal., vol. 1, 1927, 

 p. 70, pi. 11, figs. 10-13. — Cushman, Special Publ. 9, Cushman Lab. 

 Foram. Res., 1937, p. 120, pi. 15, figs. 1-3. — Adams, Amer. Journ. Sci., 

 vol. 237, 1939, p. 509. 



Test elongate, 2 to 2% times as long as broad, much compressed, pe- 

 riphery sharp and keeled, gradually tapering, greatest breadth toward the 

 apertural end ; chambers distinct, the earliest ones low and broad particu- 

 larly in the microspheric form, gradually increasing in relative height as 

 added, the later ones very slightly if at all inflated; sutures fairly distinct, 

 oblique, forming an angle of about 35° with the horizontal, strongly 

 limbate; wall finely perforate, ornamented by several, very strongly 

 raised, longitudinal costae, running nearly the entire length of the test, 

 connected in the later portion by numerous, irregularly anastomosing, 

 shorter costae of about the same strength; aperture elongate, narrow. 

 Length up to 1.00 mm.; breadth 0.35-0.40 mm.; thickness 0.08-0.10 mm. 



The types are from the Pleistocene, Lomita Quarry, Palos Verdes 

 Hills, California. 



As a living species this is rare, much more so than the following 

 variety. A fairly typical specimen is figured. 



Stations: 230, 1077, 1078, 2093, 2094, 2140, 2144, 2146, 2149, 

 2151,2152,2153. 



