Manchester Memoirs, Vol. liv. (1910), No. 10. 7 



but they have not fully reached the hauerine stage, and, 

 therefore, the outline of the test is oblong, instead of 

 nearly circular. For full particulars see the Delos paper 

 (1904). 



Planispirina striata, Sidebottom. 



See Delos paper (1904). This species must not be 

 confused with the hauerine form of Mil. suborbicularts, 

 d'Orb., which also has three chambers in the last whorl. 



In P. striata the central chambers are exposed, but in 

 M. suborbicularis, at any rate in the Delos examples, this 

 is not the case. 



Cornuspira, Schultze. 



Cornuspira foliacea, Philippi, sp. 

 Fine examples occur. 



Cornuspira involvans, Reuss. 



Only one of them shows the microspheric condition. 



Peneroplidin^. 



Peneroplis, Montfort. 



Peneroplis pertusus, Forskal, sp. var. d^.planatjis, Fichtel and 

 Moll, sp. 



Peneroplis pertusus, Forskal, sp. var. c. arietinus, Batsch, sp. 



Peneroplis pertusus, Forskal, sp. var. d.cylindraceus, Lamarck, 

 sp. 



Peneroplis pertusus, Forskal, sp. var, g. laevigatus, Karrer. 



Orbitolites, Lamarck. 

 Orbitolites duplex, Carpenter. 



There are only two or three specimens on the slide, 

 and although on their peripheral edges the chambers 

 sometimes alternate and sometimes do not, still I think 

 they may be referred to this variety, viz., O. duplex. 



