from the " Cambridge Gi'eensand." 313 



Poly morphina fusiformis , Romer, var. horrida, Reuss. 



Polymorphina horrida, Wright, 1875, Rep. & Proc. Belf. Nat. Field- 

 Club for 1873-74, Appendix, 1875, p. 85, pi. iii. fig. 14. 



Polymorphina fusiformis, Romer, " Fistulose form," Chapman, 1896, 

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



Polymorphina fusiformis, Romer, var. horrida, Reuss, Jones & Chap- 

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



The solitary specimen found at S waff ham more nearly 

 resembles the Chalk specimen found by Mr. Wright than 

 that figured from the Gault series. The original specimen of 

 von Reuss * belongs to the species P. gutta. 



Polymorphina fusiformis, Romer, var. acuplacenta, 

 Jones & Chapman. 



The variety here under consideration has apparently never 

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

 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 Polymorphina^ 

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

 more produced. 



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

 found at S waff ham. 



Polymorphina sororia, Reuss, var. cuspidata, Brady. 



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

 vol. ix. p. 563, pi. lxxi. figs. 17-19, pi. 1: " 

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



This 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 Swaff ham. 



Polymorphina communis, d'Orbigny. 



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



vol. vii. p. 266, pi. xii. figs. 1-4 ; Modele, no. 62. 

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



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



One specimen from S waff ham. 



* " Globulina horrida" Reuss, 1845, Verstein. bohm. Kreidef. pt. ii. 

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



