STUDIES IN FORAMESriFERA 



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tions): Catapsydrax dissimilis zone to Globorotalia me- 

 Tuirdii zone. 



Locality: Figured hypotype (USNM P5629) from 

 the type locality of the Globorotalia Johsi barisanensis 

 zone, sample Bo 202 (TTOC 193125). 



Globigerinoides triloba immatura Le Roy 

 Plate 25, Figures 3a-4c; Text-figure 21, No. 2 



Globigerinoides sacculiferus (Brady) var. immatura Le Rot, 

 Natuurk. Tijdschr. Nederl. -Indie, Batavia, vol. 99, pt. 6, 

 p. 263, pi. 3, figs. 19-21, 1939. 



Globigerinoides sacculifera (Brady), Cushman and Stainforth, 

 Cushman Lab. Foram. Res., Spec. Publ. 14, p. 68, pi. 13, 

 fig. 3, 1945. — Bebmudez, Cushman Lab. Foram. Res., Spec. 

 Publ. 25, p. 278, pi. 21, fig. 49, 1949. 



Stratigraphic range (in Cipero and Lengua forma- 

 tions) : Oloborotalia kugleri zone to Globorotalia menardii 

 zone. 



Locality: Figm-ed hypotypes (USNM P5630a,b) 

 from the Globorotalia Johsi robusta zone, sample JS 46 

 (TTOC 194056). 



Clobigerinoidea triloba sacculifera (Brady) 

 Plate 25, Figures 5a-6; Text-figure 21, No. 4 



Globigerina sacculifera Brady, Geol. Mag., n. s., decade 2, vol 

 4, No. 12, p. 535, 1877 (type figure in Rep. Voy. Challenger' 

 Zool., vol. 9, pi. 80, figs. 15, 16, 1884). 



Globigerinoides sacculifera (Brady), Coryell and Rivero, Journ. 

 Paleontol., vol. 14, No. 4, p. 340, pi. 42, figs. 24, 25, 32, 

 1940. — Bebmudez, Cushrnan Lab. Foram. Res., Spec. Publ. 

 25, p. 281, pL 21, fig. 53, 1949. 



Stratigraphic range (in Cipero and Lengua forma- 

 tions) : Globorotalia kugleri zone to Globorotalia menardii 

 zone. 



Locality: Figured hypotypes (USNM P5631a,b) 

 from the type section of the Globorotalia Johsi lobatu 

 zone, sample JS 32 (TTOC 193786). 



Globigerinoides triloba altiapertura Bolli, new subspecies 

 Plate 25, Figures 7a-8; Text-figure 21, No. 3 



Shape of test trochospiral ; equatorial periphery dis- 

 tinctly lobate (trilobate) ; axial periphery rounded. 

 WaU calcareous, perforate, siu-face finely pitted. Cham- 

 bers spherical; about 12, aiTanged in about 2)^ whorls; 

 the 3 chambers of the last whorl increase rapidly in 

 size. Sutm-es on spiral side between early chambers 

 radial, later slightly ciu-ved and oblique, depressed; on 

 umbilical side: radial, depressed. Umbilicus fairly nar- 

 row, deep. Primary apertiue, a high, distinct arch, 

 interiomarginal, umbilical; the last few chambers show 

 one supplementary sutural aperture about opposite the 

 primary aperture. Coiling random. Largest diameter 

 of holotype 0.55 mm. 



Stratigraphic range (in Cipero formation) : Catapsy- 

 drax dissimilis zone to Catapsydrax stainforthi zone. 



Locality: Holotype (USNM P5632) and figured para- 

 type (USNM P5633) from the type locality of the 

 Catapsydrax dissimilis zone, Trinidad, sample Bo 267 

 (TTOC 201216). 



Remarks: Globigerinoides triloba altiapertura, new 

 subspecies, is distinguished from G. triloba immatura 

 Le Roy by having a larger, higher arched, primary 

 aperture. 



Globigerinoides obliqua Bolli, new species 

 Plate 25, Figures 9a-10c; Text-figure 21, No. 5 



Shape of test trochospiral; equatorial periphery dis- 

 tinctly lobate; axial periphery rounded. Wall cal- 

 careous, perforate, surface finely pitted. Chambers 

 spherical, except the ultimate ones, which are com- 

 pressed in a lateral oblique manner; 12-15, arranged 

 in about 3 whorls; the 3, in large specimens 4, chambers 

 of the last whorl increase rapidly in size; in large 

 specimens the last chamber may be reduced again in 

 size. Sutures on spiral side radial to oblique, de- 

 pressed; on umbilical side radial, depressed. Umbilicus 

 small. Primary aperture a distinct, often fairly 

 high arch, interiomarginal, umbilical; one or oc- 

 casionally two supplementary sutural apertures are 

 visible in the last few chambers. Largest diameter of 

 holotype 0.5 mm. 



Stratigraphic range (in Cipero and Lengua forma- 

 tions) : Globorotalia kugleri zone to Globorotalia menardii 

 zone. 



Locality: Holotype (USNM P5634) and figured 

 paratype (USNM P5635) from the type locality of the 

 Globorotalia mayeri zone, Trinidad, sample KR 23422 

 (TTOC 160634). 



Remarks: Globigerinoides obliqua, new species, is 

 distinguished from the Globigerinoides triloba group by 

 having the ultimate or the last few chambers compressed 

 in a lateral, oblique manner. In Globigerinoides triloba 

 they remain spherical and in the subspecies sacculifera 

 become elongate, sack-like shaped. 



Globigerinoides rubra (d'Orbigny) 



Plate 25, Figures 12a-13b; Text-figure 21, No. 6 



Globigerinoides rubra (d'Orbigny), Bermudez, Cushman Lab. 



Foram. Res., Spec. Publ. 25, p. 281, pi. 21, fig. 52, 1949. 

 Globigerinoides subquadrala Bronnimann, in Todd, Cloud, Low, 

 and Schmidt, Amer. Journ. Sci., vol. 252, p. 680, pi. 1, 

 fig. 5, 1954. 



Stratigraphic range (in Cipero formation): Cata- 

 psydrax dissimilis zone to Globorotalia Johsi robusta zone. 



Locality: Figured hypotypes (USNM P5636) from 

 the Globorotalia Johsi robusta zone, sample KR 20464G 

 (TTOC 96722), and (USNM P5637) from the Glo- 

 bigerinatella insueta zone, core 7,419-39 feet of United 

 British OUfields of Trmidad, Ltd. (now Shell Trinidad, 

 Ltd.), well Penal No. 92. 



Remarks: Globigerinoides rubra is a characteristic 

 species ranging in the Cipero formation from the 

 Catapsydrax dissimilis zone to the Globorotalia Johsi 

 robusta zone. It is easily recognizable by the position 

 of the primary and supplementary sutural apertures, 

 which are always symmetrically placed above the 

 sutiu-e between two earlier chambers (see text-fig. 21, 



