■I 







PALJEONTOGRAPHICAL SOCIETY. 



VOL LXXIV 



THE PALEOZOIC A8TEROZOA. 



Pakt V. 



Pages 197—236: Plates XIV— XVII. 



THE CARBONIFEROUS 

 INSECTS. 



Part II. 



Pages 81—156; Plates V— X. 

 Title-page and Index. 



THE PLEISTOCENE MAMMALIA 

 -HIPPOPOTAMUS. 



Pages 1—38; Plates I— VI. 



Issued for 1920. 



