208 



UNITED STATES NATIONAL MUSEUM BULLETIN 215 



(USNM P4362) from a core at 602-604 feet, and Tin- 

 figured paratypes (USNM P4363) from a core at 829- 

 839 feet, all from the Sentinel Hill member of the 

 Schrader Bluff formation, in Sentinel Hill core test 1, 

 at lat. 69°35'48" N., long. 151°28'09" W., on the 

 banks of the ColvUle River, northwest of Umiat, 

 northern Alaska. 



Unfigured paratypes (USNM P4364) from a core at 

 1,351 feet in a marine zone of the Prince Creek forma- 

 tion, m Gubik test well 2, at lat. 69°25'10" N., long. 

 151°27'26" W., near the confluence of the Chandler 

 and Colville Rivers, northern Alaska. 



Figured paratype (USNM P4340) and unfigirred 

 paratypes (USNM P4341) from field sample 46A Fi 

 80 A, in the Seabee formation (Turonian), taken one 

 mUe east of Wolf Creek test well 2, in the area of the 

 Wolf Creek anticline, at lat. 69°24'32" N., long. 

 153°31'25" W., northern Alaska. Collected by W. A. 

 Fischer, 1946. 



Figured paratype (USNM P4342) and unfigured 

 paratypes (USNM P4343) from field sample 46A Gr 

 98, lower part of the Ignek formation, on the Ivishak 

 River, at lat. 69°20'40"N., long. 148°10'50" W., 

 northern Alaska. Collected by George Gryc, 1946. 



Unfigured paratypes (USNM P4346) from field 

 sample 47A St 25, from 2,570 feet below the top of the 

 Sentinel Hill member of the Schrader Blufif formation, 

 on the north bank of the Colville River, about 8 nules 

 east-northeast of Umiat, at lat. 69°25' N., long. 151°48' 

 W., about 7% miles southwest of the jimction of the 

 Chandler and Colville Rivers, in the northern foothills 

 of the Brooks Range, northern Alaska. Collected by 

 Karl Stefansson, 1947. 



Vemeuilinoides taiUeuri Tappan, new species 

 Plate 66, Figubes 19-22 



Test free, relatively narrow, elongate, sides nearly 

 parallel; chambers numerous, low, triserially arranged, 

 somewhat inflated; sutures distinct, depressed, hori- 

 zontal; wall finely agglutinated; aperture a low arch at 

 the base of the final chamber. 



Length of holotype 0.58 mm., breadth 0.18 mm. Para- 

 types range from 0.34 to 0.55 mm. in length. 



Remarks: VerneuUinoides tailleuri, new species, 

 differs from V. borealis, new species, in being smaller and 

 narrower, with nearly parallel sides, and in having 

 lower, more numerous, and more closely appressed 

 chambers and nearly horizontal sutures. It differs from 

 Tritaxia spiritensis prolongata Stelck and Wall in lacking 

 the terminal aperture and in having lower and more 

 closely appressed chambers. 



V. tailleuri is restricted to the Fortress Mountain 

 formation. The specific name is in honor of I. L. Tail- 

 leur, geologist, U. S. Geological Survey, who collected 

 some of the outcrop material containing this species. 



Types and occurrence: Holotype (USNM P4367), 

 figured paratype (USNM P4368), and unfigured para- 

 types (USNM P4369) from 5,500 to 6,000 feet above 

 the base of the Fortress Mountain formation (field 



sample 49 A Tr 565), on Castle Creek, south-southwest 

 of Castle Mountain, at lat. 68°32'05" N., long. 162°49' 

 W., in the southern foothills of the Brooks Range, north- 

 ern Alaska. Collected by I. L. Taflleur, 1949. 



Unfigured paratype (USNM P 4370) from the Fortress 

 Mountain formation (field sample 49A Pa 84), along 

 Fortress Creek, tributary to the Ayiyak River, north- 

 west of Fortress Mountain, at lat. 68°35'20" N., long. 

 153°11'30" W., m the southern foothills of the Brooks 

 Range, northern Alaska. Collected by W. W. Patton, 

 Jr., 1949. 



Figured paratype (USNM P4365) and unfigured para- 

 types (USNM P4366) from the Fortress Mountain for- 

 mation (field sample 49A Tr 662) , from a cut bank on 

 the east side of a small tributary that enters Kiruk- 

 tagiak River from the south, about 1,000 feet upstream 

 from their confluence, at lat. 68°37' N., long. 152°42' 

 W., in the southern foothills of the Brooks Range, 

 northern Alaska. Collected by I. L. TaiUeur, 1949. 

 Unfigured paratype (USNM P4371) from the Fortress 

 Mountain formation (field sample 49A Pa 436), on 

 Castle Creek, 2.9 miles airline south-southwest of 

 Castle Mountain, at lat. 68°32'30" N., long. 152°51'30" 

 W., in the southern foothills of the Brooks Range, north- 

 em Alaska. Collected by W. W. Patton, Jr., 1949. 



Unfigured paratype (USNM P4372) from the Fortress 

 Mountain formation (field sample 49 A Pa 571), on 

 Castle Creek, about 2% miles southwest of Castle Moun- 

 tam, at lat. 68°32'45" N., long, 152°51'30" W., in 

 southern foothills of the Brooks Range, northern 

 Alaska. Collected by W. W. Patton, Jr., 1949. 



Figured paratype (USNM P4373) and unfigured 

 paratypes (USNM P4374) from field sample 49A Pa 

 594, in a section from 1,150 to 1,750 feet above the base 

 of the Fortress Mountain formation, on the Kiruktagiak 

 River, west of Castle Mountain, at lat. 68°35' N., long. 

 152°54' W., in the southern foothills of the Brooks 

 Range, northern Alaska. Collected by W. W. Patton, 

 Jr., 1949. 



Family Valvulinidae Cushman, 1927 



Genus Arenobulimina Cushman, 1927 

 Arenobulimina paynei Tappan, new species 



Plate 67, Figitres 1-4 



Test free, flaring, early portion triserial, later with 

 four chambers to a whorl; chambers much inflated, al- 

 though some specimens have been crushed in preserva- 

 tion, increasing rapidly in size; sutures distinct and 

 much constricted; wall finely agglutinated, but some of 

 the paratypes are represented only by pyritic casts, a 

 common method of preservation in these strata; aper- 

 ture a low arch at the inner margin of the final chamber. 



Length of holotype 0.36 mm., breadth 0.21 mm. 

 Paratypes range in length from 0.18 to 0.55 mm. 



Remarks: This species differs from Arenohvlimina 

 chapmani Cushman from the Gault of England in being 

 more flaring, about one-third as large, and with more 



