275 



collected, as well as oligomioceiie limestones; while Lacazina-lime- 

 stones have been found near Ihe Carapong Horna; in the second 



ife!^^ 







Eoceen 



Oud Neogeen 



Jong Neogeen 



Indifferente Gesteenten, meest tertiair 



Marine Arkose 



Marmer 



Oude Schistmateriaai in Tertiair 



Eocene. 



Older Neogene. 



Younger Neogene. 



Indifferent Rocks, mostly tertiary. 



Marine Arcose. 



Marble. 



Old Schist-material in Tertiary. 



place in the northwestern part of the "Bird's head", where Laca- 

 zina-iimestones have been collected, at one locality. From this it is 

 evident that eocene is only sparingly distributed; moreover it should 

 be observed that the rocks of the two localities, where Lacazina 

 alone is found, cannot on that account be referred to the eocene 

 with absolute certainty, however probable this may be. From the 

 region between Rnmberpon (Amberpon) and Horna rocks have been 

 described by me formerly that pointed to the boundary strata 

 lietween eogene and neogene '). 



On the contrary limestones of littoral facies from tlie older neogene 

 have been found in a large number of localities, characteiized by 

 the occurrence of Lepidocyclina, Miogypsina and Cycloclypens. 

 Similar limestones from the region between Rumberpon and Horna 

 and from the Andai-river near Menokwari, have been previously 

 described. They now appear to occur to the west of Rnmberpon 

 in a broad zone, running north-south, and to extend farther south 



1) Nova Guinea. VI. 2. 1914. 



