JJ 



58 THE FORAMINIFEEA 



Family 3. GroiniirKi, Biitschli. 



,, 4. Aiiipludoiuiiui, Biitschli. 



„ 5. MilioJidina {Miliolidea Reuss, + pars 



LituoUdarum). 



,, 6. Peneroplidina^ Reuss. 



„ 7. Oi-hit(ditina {Orbitulitidea, Reuss). 



„ 8. Arenacea, Biitschli. 



B. Tribe. — Perfoeata, Carpenter + pars 

 LituoUdarum. 



Family 1. BJiabdoina, Schultze. 

 „ 2. Polymorphinina, Biitschli. 

 Globigerinina, Carpenter. 

 Sub- family (a) Globigerinte, Carp. 



(b) Cryptostegia, Reuss. 



(c) Textularidse, Carp. 



(d) Rotalinae, Carp. 

 Family 4. Nummiilitince (Nummulinida, Carpenter), 



emend. Biitschli. 

 Sub-family (a) Involutina^, Biitschli. 



(b) Pulleninae, Biitschli. 



(c) Nummulitidte. 

 (r?) Fusulinid^e, Moller. 



(e) Cycloclypida', Biitschli. 



The difficulty in accepting this system, although 

 the external form has been carefully considered, lies 

 in the fact that in the same family such distinct types 

 as the Textularids and the Rotalines are associated, 

 and which have very little in common as regards the 

 minute structure of the shell-wall. The same may 

 also be said for the fourth family of this arrangement. 



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