Manchester Memoirs, Vol. li. (1907), No. 9. 11 



and G. tiiberculata. These points of agreement are the 

 contour of the tests, and their having delicate surface 

 markings which cause unevenness ; I am unable, however, 

 to satisfy myself as to their identification with d'Orbigny's 

 drawings. Frequent. 



Polymorphina rotundata, Bornemann,sp. (PI. 2, fig. 18.) 



Guttalina rotundata (Bornemann), Brady, Parker and 

 Jones ('70), p. 234, figs. K.L.M. 



Rostrolina, Von Schlicht ('70), No. 412, p. 72, pi. 26, 

 %s. 13-15. 



Polymorphina rotundata, Reuss ('70), p. 487, No. 14 ; 

 Schlicht, op. cit., pi. 26, figs. 13-15, pi. 28, figs. 1-5, pi. 30, 

 figs. 33-40. 



P. turgida, Reuss, op. cit., p. 487, No. 10 ; Schlicht, 

 op. cit., pi. 28, figs. 6-10, pi. 29, figs. 1-5. 



A few of the specimens appear to be almost identical 

 with Bornemann's figures in the above reference, and some 

 of those that have fewer chambers seem to agree with 

 Polymorphina sororia, Reuss, but the Delos specimens of 

 these two species run into each other to such a degree 

 that they cannot be separated. Frequent. 



* Polymorphina communis, d'Orbigny. 



Polymorphina communis, d'Orbigny ('46), p. 224, pi. 13, 

 figs. 6-8. 



Globulina irregularis, Id., ibid., p. 226, pi. 13, figs. 9, 10. 



Polymorphina semiplana, Reuss ('70), p. 488, No. 16 ; 

 Schlicht ('70), pi. 27, figs. 22-33. 



P. Problema, var. communis, Reuss, op. cit., p. 487, 

 No. 15 ; Schlicht, op. cit., pi. 30, figs. 13-16. 



P. communis (d'Orb.), Brady, Parker and Jones ('70), 

 p. 224, pi. 39, fig. 10. 



P. communis (d'Orb.), Bagg ('98), p- 60, pi. 6, fig. 2. 



