304 AUSTRALIAN FORAMINIFERA, II., 



73. P. MICHELINIANA d'Orb. 



74. P. PAUPERATA P. i\: J. 



75. p. PROCERA Brady. 



76. P. CANARIENSIS d'Olb. 



77. p. CRASS A d'Orb. 



78. p. EXIGUA Brady. 



79. RoTALiA PAPiLLOSA Brady, var. compressiuscula Brady, C. R. 



pl.cviii. 



Family NUMMULINID^. 

 Subfamily POLYSTOMELLIN^. 



80. NONIONINA BOUEANA ReUSS. 



SI. N. depressula W. &J. 



82, N. POMPiLioiDis F. &M. 



83. X. SCAPHA F. Oc M. 



Sagrina sydneyensis, 11. sp. (Plate vi., figs.4«, b). 



This species has a straight cylindrical test. The commence- 

 ment is a large hemispherical chamber which, however, contains 

 one septum, indicating a iivigerine commencement. The sub- 

 sequent chambers are short and cylindrical, and do not at first 

 increase in diameter. Subsequent!}^ they increase slowly in 

 diameter as well as in length (tig. 4a). The surface of each 

 chamber is ornamented with minute spines, and two or three 

 extraordinaril}' large oval pores. The latter are irregularly dis- 

 tributed, l)ut are chiefly found towards the proximal end of each 

 segment. Size: length 0*57 mm. 



Cerviciferina hilli gen. et sp.nov. (Plate vi., figs.7rt, b). 



This remarkable form is circular in outline, and very depressed, 

 nevertheless slightly biconvex, and surrounded by an equatorial 

 keel(fig.7«). The initial chamber in the specimen figured is 

 distinctly oval in outline and has an entosolenian neck. The 

 succeeding chamber envelops the one lirst formed, and is dis- 

 tinctly flask-shaped. After this the chambers become more and 

 more rounded, and the distal end of the one chamber is at the 



