NO. 5 CUSHMAN AND MCCULLOCH : SOME BULIMINIDAE 289 



curvature of the chambers, often confluent across the sutures; aperture 

 terminal, elongate oval, without a neck or with only a short one, sur- 

 rounded by a slightly thickened rim. 



Length 0.45-0.65 mm ; width 0.20-0.30 mm. 



This species seems to be characterized by its curved costae, sometimes 

 confluent across the sutures, and its compressed aperture. It may be dis- 

 tinguished from J. angidosa (Williamson) by its more heavily orna- 

 mented test and its later inflated and irregular chambers, whereas A. 

 angidosa is triangular in section throughout. It may be mentioned, how- 

 ever, that rare specimens of A. fluens n. sp. are also triangular throughout, 

 and these are believed to represent microspheric individuals. One of these 

 is figured. The occasional development of the attenuated, flattened or 

 concave, later chambers is believed to represent the gerontic stage of 

 development of this species, and a specimen is figured illustrating this 

 stage (See figs. \d, e and /.) 



Some of the specimens figured as "Uvigerina angidosa Williamson" 

 by Heron-Allen and Earland {Discovery Reports, vol. 4, 1932, p. 397, 

 pi. 12, figs. 33-36 [not 32, 37-39] ) from oiif the Falkland Islands would 

 appear to belong in this species. The species has been recorded from 

 Pliocene? material from the Aleutian Islands. 



Holotype (AHF no. 64) from Station A-2, at Wrangell, Alaska, 

 where it occurs abundantly. It also occurs at the following stations: A-1, 

 67, 226, 228, 283, 285. 535, 1100, 1168, 1183, 1201, 1204, 2063, 2086, 

 2097, 2098, 2100, 2131, 2140, 2149, 2152, 2153, 2154, 2156, 2165, 2167. 

 It is especially beautifully developed at Station 535, Lobos de Afuera 

 Island, Peru, from which station a specimen is illustrated (figures \d, e). 



Distribution. — The type locality. Station A-2, is Wrangell, Alaska, 

 in 2 fms. A further analysis of the localities places this species ofif Peru 

 in 22 fms and in the Gulf of California in depths ranging from 8 to 160 

 fms. 



Angulogerina hughesi (Galloway and Wissler) 

 Plate 36, Fig. 2 



Uvigerina hughesi Galloway and Wissler, Journ, Pal., vol. 1, 1927, 

 p. 76, pi. 12, fig. 5. 



Angulogerina hughesi Cushman, Stewart and Stewart, Trans. San 

 Diego Soc. Nat. Hist., vol. 6, 1930, p. 70, pi. 5, fig. 16; Campbell, Journ. 

 Entom. and Zool., vol. 27, No. 3, 1935, p. 45, text fig. 7 ; Cushman and 

 Todd, Contr. Cushman Lab. Foram. Res., vol. 17, 1941, p. 76, pi. 18, fig. 

 4; pi. 19, fig. 17; Special Publ. 21, Cushman Lab. Foram. Res., 1947, p. 

 19, pi. 3, fig. 8. 



