from the " Cainhridje Greensandy 313 



Polymorphina fusiforinisy Romer, var. horrida^ Reusa. 



PoU/morphiim hnrrida, Wrii^ht, 187o, Rep. & Proe. Belf. Nat. Field- 

 Club for 187;!-r4, Appemlix, 187o, p. 8^), pi. iii. fig. 14. 



Poli/mnrp/iinti fnsiformis, lli'miev, " Fi.stulose form," Chapman, 1890, 

 Jouru. R. Micr. Soc. pp. 11, 12, pi. ii. fig. 10. 



Polymorphina fusifornm, Rtimer, var. horrida, Reuss, Jones & Chap- 

 man, 1896, Journ. Linn. Soc, Zoology, vol. xxv. p. 503, fig. 14. 



The solitary specimen found at SwafFIiam more nearly 

 reserable.s the Chalk specimen found by Mr. Wright than 

 tliat figured from the Gault series. The original specimen of 

 von Reuss * belongs to tlie species P. gatta. 



Polymorphina fusifor mis J Romer, var. acuplacenta, 

 Jones & Chapman. 



The variety here under consideration has apparently never 

 hitherto been found associated with the type species P. fnsi- 

 formis. The nearest figured form of outgrowth which the 

 specimens from the Cambridge Greensand resemble is that of 

 fig. 9, p. 502 of the summary of the fistulose Polymorphince 

 [op. cit.), although in that specimen the outgrowths are much 

 more produced. 



Three specimens of P. fnsiformis, var. acuplacenta, were 

 found at Swaflfham. 



Polymorphina sororia, Reuss, var. cuspidata, Brady. 



Polymorphina sororia, Reuss, var. cuspidata, Brady, 1884, Chall. Rep. 

 vol. ix. p. o&i, pi. Ixxi. fig.s. 17-19, pi. Ixxii. fig. 4 ; Chapman, 1896, 

 Journ. R. Micr. Soc. p. 13, pi. ii. fig. 13. 



Tliis variety has been recorded from the Aptian of Guild- 

 ford, the Gault of Folkestone, and the Red Chalk of Speeton. 

 Only one specimen was found at Swaffham. 



Polymorphina communis, d'Orbigny. 



Polymorphina (Giittulina) communis, d'Orbigny, 1826, Ann. Sci. Nat. 



vol. vii. p. 2(56, pi. xii. figs. 1-4 ; Models, no. 62. 

 Polymorphina communis, d'Orb., Chapman, 1896, Journ. R. Micr. Soc. 



pp. 13, 14, pi. ii. fig. 15. 



One specimen from SwafFham. 



* " Ghlmlina horrida,'^ Reuss, 1845, Verstein. bohm. Kreidef. pt. ii. 

 p. 110, pi. xliii. fig. 14. 



