MancJiester Monoirs^ Vol. liv. (1910), No. 16. 29 



Polytrema, Risso. 

 Polytrema niineacemn, Linnc, sp. 



Present both in the adult and embryonic states. 



NUMMULINID^. 



POLYSTOMELLIN/E. 

 Nonionina, d^Orbigny. 



Nonionina depressnla, Walker and Jacob. 



Several varieties occur, including the clear compressed 

 tests, and those that are opaque. 



Nonionina stelligera, d'Orbigny. 



Large examples are of frequent occurrence. 



Nonionina scapha, Fichtel and Moll, sp. (PI. 3, fig. 13). 



The one figured is commencing the linear manner of 

 growth. 



Nonionina asterisans, Fichtel and Moll, sp. (PI. 3, fig. 14). 

 These Palermo specimens are nothing more than 

 A'', stelligera, with the stellate portion arrested. 



Nonionina boneana, d'Orbigny. 



These vary greatly as to their contour, and none of them 

 are stoutly built. 



Nonionina turgida, Williamson, sp. 



This pretty form is well represented in this material. 



Nonionina nmbilicatula, Montagu, sp. (PI. 3, fig. 15). 

 Only five are on the slide. 



Polystomella, Lamarck. 

 Polysioniella striatopnnctata, Fichtel and Moll, sp. (PI. 

 3, fig- 16). 



