106 PROTOZOA. 



A. CLASSIFICATION OF THE FORAMINIFERA, ACCORDING TO CARPENTER, 

 PARKER, AND RUPERT JONES. 



SUB - ORDER I. IMPERFORATA. Test membranous, calcareous, or 

 arenaceous, not perforated by pseudopodial foramina. 



Family 1. Gromida. 

 2. Miliolida. 

 3. Lituolida. 



SUB-ORDER II. PERFORATA. Test perforated by pseudopodial fora- 

 mina, generally calcareous. 



Family 1. Lagenida. 

 2. Globigerinida. 

 3. Nummulinida. 



B. CLASSIFICATION OF THE FORAMINIFERA ACCORDING TO REUSS. 



I. FORAMINIFERA WITH A NON-PERFORATE TEST. 



A. With arenaceous tests. 



1. Lituolidea. 



2. Uvellidea. 



B. With compact, porcellanous, calcareous tests. 



1. Squamulinidea. 



2. Miliolidea. 



3. Peneroplidea. 



4. Orbitulitidea. 



II. FORAMINIFERA WITH A PERFORATE TEST. 

 A. With a glassy, finely porous, calcareous test. 



1. Spirillinidea. 



2. Ovulitidea. 



3. Rhabdoidea. 



4. Cristellaridea. 



5. Polymorphinidea. 



6. Cryptostegia. 



7. Textilaridea. 



8. Cassidulinidea. 



B. With an exceedingly porous, calcareous test. 



1. Rotalidea. 

 C. With a calcareous shell, traversed by a ramified canal-system. 



1. Polystomellidea. 



2. Nummulitidea. 



With regard to the classification of the Foraminifcra, the 

 author may advantageously quote some remarks on this sub- 



