4 8 
2. Port Moresby Beds. — The Port Moresby Beds occupy a con- 
siderable area of country fringing the coast from Caution Bay south- 
eastward to McFarlane Harbour, and extending inland for about 
twenty miles up the Kemp-Welch River ; they also occur in the main 
range north of the Purari Rivei, about 130 miles from the sea. The 
beds in the neighbourhood of Port Moresby consist of sandy lime- 
stones (containing foraminifera) and fine grained calcareous shales, with 
thin bands of a buff color. Black and yellow lenticular nodules of 
flint, with chalcedony are of common occurrence. The beds are 
generally vertical or inclined at high angles. In Camp Creek, a 
tributary of the Laloki, the Port Moresby Beds rest directly upon a 
coarse granite rock. 
Similar strata to those of Port Moresby occur in cliffs along the 
coast as far as Kerepuna, but they yielded me no fossils. 
At Helena on the south side of Hall Sound, the bay at the mouth 
of the Paumomu (St. Joseph), the strata are represented by buff- 
colored calcareous shales, sandstones, conglomerates, thinly bedded 
and massive limestones, which yielded fossils. It was in this neigh- 
bourhood that fossils were first discovered by D’Albertis and Macleay. 
The Macleay collection comprised : — 
Echinoidea. Temnechmus Macleay ana . 
Pe 7 'onella Diagonalis . 
Gasteropoda. Dolium Costatum. 
'Jt-'V) Vo hit a Macroperla. 
and an internal cast of Stronibns ( Gallinula ) Campbelli , a 
species now living in the Australian seas, 
Roro or Yule Island, charted by the H.M.S. “Rattlesnake” in 
1849 I visited, and examined the geological sections seen in the cliffs 
on the South-East coast. A section of this is depicted hereunder : — 
s.w. 
*" SECTION AT the SOUTH WEST ErtO OE RQROy^yuLE /SU>»P) 
A CaJumrtruj SasLcCf&ruiu* _B 7 ZeUsecL JBecic/,; 
C. &cukzituy LaMdy 
(a) consists of a series of fine grained calcareous sandstones 
dipping at 20 to 30 degrees to the north-east. These beds contain 
fossils which proved to be too fragmentary for transport. From one 
bed I was successful in securing a Pecten . Interstratified with these 
beds are coralline limestone (“Coral Rag”). Many contain numerous 
