CLASSIFICATION OF THE ANIMAL KINGDOM. 



Sub-ord. 2. Perforata. 



Fara. a. Textularidse. Textularia, Bulimina, Cassidu- 



lina. 



Fam. b. Chilostoinellidae. Chilostomella. 

 Fam. c. Lagenidse. Lagena, Nodosaria, Marginulina, 



Cristellaria. 



Fam. d. Globigerinidse Globigerina. 

 Fam. e. Eotalidse. Rotalia, Discorbina, Puhinulina. 

 Fam. /. Nummulinidse. Nummulites, *Fusulina, Orbi- 



toides. 



Fig. 4. Shells of Foraminifera. a, Orbulina universa, in its perfect condition, showing 

 the tubular spines which radiate from the surface of the shell ; b, Globigerina bulloides, in 

 its ordinary condition, the thin hollow spines which are attached to the shell when perfect 

 having been broken off; c, Textularia variabilis; d, Peneroplis planatus; e, Rotalia conca- 

 merata; f, Cristellaria subarcuatula. (Fig. a is after Wyville Thomson ; the others are after 

 Williamson. All the figures are greatly enlarged.) 



The above classification, except in the retention of the sub-orders Im- 

 perforata and Perforata, is that adopted by Mr H. B. Brady. It is true 

 that the section of the Imperforata includes various forms in which the 

 shell is known to be pierced to a larger or smaller extent with pseudo- 



