Plate 1. HANTKENINIDAE : PLANOMALININAE 



Page 

 Figures la, b. Glohigerinelloides algeriana Cushman 21 

 and ten Dam 



la, Side view of paratype (Cushman Coll. 

 56790), showing evolute coil, umbilical chamber 

 extensions and sinuate sutures, lb, Edge view, 

 showing low arched equatorial aperture. From 

 the Aptian (Lower Cretaceous) of Algeria. 

 X7S. 



Figures 2a-3b. Planomalina apsidostroba Loeblich 23 

 and Tappan 



2a, Side view of holotype (Cushman Coll. 

 45667), showing peripheral keel, limbate sutures 

 and the lips of the lateral relict apertures. 2b, 

 Edge view, showing equatorial primary aperture. 

 X 110. 3a, Side view of hypotype (USNM 

 P5394) with well preserved relict apertures in 

 later chambers. 3b, Edge view, X 145. From 

 the Lower Cretaceous (Albian) of Texas. 



Figures 4a-5b. Planomalina caseyi Bolli, Loeblich, 24 

 and Tappan, new species 



4a, Side view of holotype (USNM P4869) 

 showing planispiral test and relict apertures. 

 4b, Edge view, showing equatorial primary 

 aperture, with the secondary relict apertures of 

 earlier chambers remaining open. 5a, Side view 

 of paratype (USNM P4870). 5b, Edge view 

 of paratype. Both from the Gault (Albian), 

 Lower Cretaceous, of England. X 180. 



Figures 6a, b. Hastigerinoides watersi (Cushman) 24 

 6a, Side view of topotype (USNM P3934), 

 showing well preserved relict supplementary 

 apertures. 6b, Edge view, showing low arched 

 primary aperture. From the Austin chalk (Up- 

 per Cretaceous) of Texas. X 130. 

 238 



Page 

 Figures 7a-10b. Hastigerinoides alexanderi (Cush- 24 

 man) 



7a, Side view of holotype (Cushman Coll. 

 15750), showing radial elongate chambers. 7b, 

 Edge view. 8a, 10a, Side views of topotypes 

 (USNM P3920a, b), showing relict apertures 

 around umbilical region, and variation in the 

 shape of the radial elongate chambers. 8b, 10b, 

 Edge views, showing low arched equatorial 

 aperture. 9, Paratype (Cushman Coll. 15754). 

 All from the Austin chalk (Upper Cretaceous) 

 of Texas. X 95. 

 Figures ll-12b. Biglobigerinella multispina La- 25 

 licker 



11, Edge view of hypotype (USNM P3214a), 

 showing lateral paired apertures. From the 

 Upper Cretaceous Taylor marl (Campanian) of 

 Texas. 12a, Side view of holotype (Cushman 

 Coll. 51898), showing spherical chambers and 

 deeply umbilicate test. 12b, Edge view, showing 

 final paired chambers. From the Upper Cre- 

 taceous Marlbrook marl (Campanian) of Ar- 

 kansas. X 160. 

 Figures 13-1 8b. Biglobigerinella barri Bolli, Loeb- 25 

 lich, and Tappan, new species 



13, Side view of large paratype (USNM 

 P4544a), showing well developed lateral relict 

 supplementary apertures and somewhat sigmoid 

 sutures of the larger specimens. 14-17, Edge 

 views of paratypes (USNM P4S44b-e), showing 

 progressive apertural development, from a single 

 equatorial arch to paired arched openings and 

 finally paired chambers. 18a, Side view of 

 holotype (USNM P4543), showing paired final 

 chambers. 18b, Edge view, showing paired final 

 chambers, each with separate aperture. All 

 from the Lower Cretaceous Maridale formation 

 of Trinidad, B.W.L X 85. 



