Fcraminifeml Limestones. 229 



Gypsina glohulus (Ecuss). 



Ceviopora glohulnn, Reuss, 1847, Haidinger's Naturw. Abhandl., vol. ii, p. 33, 



pi. T, fig. 7. 

 OrbitoUna Iceiis, Parker & Jones, 1860, Ann. Mag. Nat. Hist., ser. in, vol. vi, 



p. 31, Xo. 7. 

 Tinoporiis pilari.i, Brady, 1S76, Ann. Soc. Malac. Bfilg., vol. vi, p. 103. 

 Tinoporiin baculiitus (Moutfort), var. sp/ueroidalis, Oartor, 1877, Ann. Mag. Nat. 



Ilist., ser. iv, vol. xix, p. 215, pi. xiii, tigs. 18, 20. 

 Gypsbia rcsicufdi-is (PHrkor & Jones), var. spJuvnAdalis, Carter, 1877, Ann. Mag. 



Nat. Ilist., ser. iv, vol. xx, p. 173. 

 Gypsina glubuliis (Rouss), Brady, 1884, Hep. ChalL, vol. ix, p. 717, pi. 101, fig. 8. 



This "wcll-known species is frequent in coral deposits throughout 

 the Tcrtiaries and in recent times. Their circular sections are 

 numerously represented in this limestone. The average diameter 

 of these specimens is about -r.^- inch. 



Amphistegina lessonii, d'Orbigny. 



A. Ussonii, d'Orbigny, 1826, Ann. Sci. Nat., vol. vii, p. 304, No. 3, pi. xvii, 



figs, "l -4. 

 A. IcssoHii, d'Orbigny : Brady, 1884, Rep. Cliall., vol. ix, p. 740, pi. Ill, 



figs. 1-7. 



This species is common in the sections now described, and it is 

 of fairly average size. A. lessonii occurs in many of the Tertiary 

 strata dating from the Eocene ; and it is common at the present 

 time in tropical and sub -tropical seas. 



Heterostegina depressa, d'Orbigny. (PI. XX, Fig. 1.) 



if. depressa, d'Orbigny, 1826, Ann. Sci. Nat., vol. vii, p. 305, pi. xvii, figs. 5-7 ; 



Modele, No. 99. 

 H. antillanim, d'Orbigny, 1839, Foram. Cuba, p. 121, pi. vii, figs. 24, 25. 

 H. helvetica, Kaufmann, 1867, Geol. Beschreib. des Pilatus, p. 153, pi. ix, 



figs. 6-10. 

 H. depressa, d'Orbigny: Brady, 1884, Rep. Chall., vol. ix, p. 746, pi. 112, 



figs. 14-20. 



Numerous examples of the above species appear in the sections 

 of limestone Xo. 2. They are of moderately large size, averaging 

 one-sixtb of an inch in width. These specimens also exhibit the 

 large flange-like portion strongly developed ; and which, when 

 isolated from the major part of the shell, may easily be mistaken 

 for one of the thick Cycloclypetnce. The specimens seen in these 

 T^ections also show the transverse subdi\'ision of the chambers into 

 chamberlets, thus being distinguished from the closely allied 

 Operciilina. 



Orbitoides {Biscocyclina) dispansa (Sowerby). (PI. XX, Fig. 1.) 



Lycophris dispansiis, Sowerby (1837), Trans. Geol. Soc. Lond., ser. ii, vol. 

 (1840), pp. 327 and 718, pi. xxiv, figs. 16 and 16«r, b. 



