250 FORAMINIFERA OF THE CRAG. 



General Characters} — Bi- or tri-serial or irregularly spiral ; aperture central, 

 terminal, round, and radiate, sometimes fissurine or porous ; surface smooth or 

 ornamented. Usually free, sometimes adherent. 



Polymorphina has been found fossil in the Triassic (Raibl) strata of South 

 Germany, the Lias, and the successive Mesozoic and Caiuozoic formations ; and 

 its distribution is world-wide at the present time. 



1. Polymorphina lactea (Walker and Jacob), 1789. Plate I, fig. 48. 

 Part I, 1866, Appendices I and II, Tables, No. 48. 



Serpula tenuis ovalis Isevis, Walker and Jacob, 1784. Test. Min., p. 2, pi. i, fig, 5. 

 Polymorpha subcordiformia vel oviformia, Soldani, 1791. Testaceogr., vol. i, 



pt. 2, p. 114, pi. cxii, fig. gg. 

 Sebpula lactea, Walker and Jacob (fide Kanmacher), 1798. Adams's Essays, 



2nd edit., p. 634, pi. xiv, fig. 4. 

 VERMicTTLtrM LACTEUM, Motitagu, 1803. Test. Brit., p. 522. 



— — Fleming, 1822. Wern. Mem., vol. iv, p. 566, pi. xv, fig. 6. 

 POLTMOEPHINA (Globulina) ovata, d'Orbigng, 1826. Ann. Sc. Nat., vol. vii, 



p. 26G, No. 22. 

 Abethusa ? lactea, Fleming, 1828. Hist. Brit. Animals, p. 234. 

 GrLOBUiiNA Caeib^sa, d'Orb., 1839. Foram. Cuba, p. 135, pi. ii, figs. 7, 8. 

 GrTTULiNA Planch, d'Orb., 1839. Foram. Amer. Merid,, p. 60, pi. i, fig. 5. 

 Eenoidea oblonga, Broton, 1844. lUustr. Eecent Conch., p. 3, pi. Ivi, figs. 16, 17 



(in 1st edit., 1827, pi. i, figs. 16, 17). 

 Polymorphina lactea, Macgillivray, 1843. Moll. Aberdeen, p. 320. 



— (Globulina) lachetma, Reuss, 1845. Verstein. bobm. Kreid., 



pt. 1, p. 40, pi. xii, fig. 6; pi. xiii, 

 fig. 83 ; and pt. 2, 1846, p. 110. 

 Globulina lachetma, Altli, 1850. Haidinger's Abhandl., vol. iii, p. 363, pi. xiii, 



fig. 16. 

 — — Beuss, 1851. Ibid., vol. iv, p. 43, pi. v (iv in text), fig. 9. 



1 For details as to the history and affinities of this genus the reader is referred to the 

 "Monograph of the Genus Polymorphina," 'Trans. Linn. Soc.,' vol. xxvii, 1870, pp. 197 — 253. The 

 critical examination of the Foraminifera depicted in Ehrenberg's ' Mikrogeologie ' not having been 

 completed when this Monograph was published in 1870, several inaccuracies were introduced ; and 

 certain errors should be corrected, as noticed in the 'Ann. Mag. Nat. Hist.,' ser. 4, vol. ix, 1872, 

 p. 298. Thus — at p. 213 delete Strophoconus ovum, spicula, and \^Orammostomum'\ laxum ; at p. 219, 

 Strophoconus stiliger and aeantkopus ; at p. 220, Orammostomum turio ; at p. 223, Strophoconus 

 Semprichii; at p. 224, Sphseroidina Parisiensis ; at p. 227, the 1st, 2nd, 3rd, 5th, 6th, 8th to the 

 16th, and the 19th of Ehrenberg's species ; and add Loxostomum vorax, pi. ixviii, fig. 24 ; at p. 232 

 delete Polymorphina asparagus and turio, Sagrina longirostris, and Vaginulina obscura ; at p. 233, 

 Vaginulina paradoxa ; at p. 234, Polymorphina nucleus; at p. 238, Orammostomum costulatum ; 

 at p. 242 add, under Globulina tuberculata, Proroporus verrucosus, pi. xxix, fig. 19. 



