BRACHIOPODA. 



126 



Summary (Geographical). 



* To America and Europe. 



t To Europe and America, and 1 Tasmania. 



To Europe and Australia. 



SUBKINGDOM MOLLUSCA. PROVINCE LAMELLIBKANCHIATA. CLASS CONCHIFERA. 

 GROUP MONOMYAKIA. (PLEUROCONOJIES, D'Orbigny.) 



