686 
From these beds Mr. Maitland obtained a suite of fossils, which, however, have • 
not yet been critically examined, but he provisionally names the following : — 
GtASTEUOPODA. 
Conus. 
Turritella. 
Lam EUniBBANCHIATA. 
Cardita. 
Pecten novw-guinex, Ten. Woods ? 
Pectunculus. 
Venus. 
And fragments of undeterminable corals. 
CRETACEOUS. 
i.- Maitland does not locate on his Geological Maps, nor does he find a place in 
his table of formations for the strata containing the Cretaceous fossils referred to by ■ 
the late Mr. C. S. Wilkinson and my Colleague,* although he quotes from the writings of 
both these gentlemen on the subject. The fossils in question, together with a further 
collection forwarded by the Administrator in the beginning of 1890,t are enclosed in 
water- worn boulders and pebbles of white limestone occurring above the confluence of 
the Strickland with the Fly River. They do not appear to have been found in situ. The 
iast-mentioiied collection consists mainly of corals. As my Colleague comments fullv 
on the hly Eiver fossils, it is unnecessary for me to say more. 
BOIORO LIMESTONES (AGE UNDETERMINED). 
_ “ What have been called the Boioro Limestones are best exposed in that headland 
in Launoka Division (Mayri Bay) from which the beds are named. 
• 1 Boioro, the limestones are of a leaden-grey colour, and are seamed with 
veinlets of carbonate of lime. The weathered surfaces present a curious brecciated 
aspect. The bedding-planes, marked by lines of brecciated fragments (?), are inclined to 
the north-west, at angles varying from 35° to 40°. Some of the hmestones contain 
flint nodules ; in some places there is a gradual passage from limestone into flint. A 
dyke ot dolerite was seen to penetrate the limestones in the cliffs of Boioro. 
fXT ?'? evidence of lithological similarity, the limestones of Eogea 
(Heath) Island, and the Mainland north of Samarai, in the vicinity of Waiera Creek, 
are denoted by the same colour as those of Boioro. The Eogea Limestones are arranged 
in thm beds in a small synclinal trough. The limestones of the Mainland are identical 
in every way with those of Eogea. In neither place did they yield any organic remains. 
The limestones of the Mainland are penetrated by dykes of dolerite, and 
sections show what have every appearance of being interbedded dolerite sheets. 
There is no evidence as to the age of the beds. From their position they 
appear, prma /a«-. to be beneath the Port Moresby Beds, and they present totally 
different lithological characters to those possessed by the latter. They are uncou- 
tormably overlaid by the Eecent Volcanic Eocks.” 
A/r ^ ^‘’‘’t-note, to the Boioro Limestones of Mayri Bay and Port Glasgow, 
Mr. Maitland sugpsts that the limestones “may be merely portions of an upraised 
coral reef, and observes that “ the adjacent island of Cette is obviously of this nature.” 
bulk hyme asperhetps of Cretaceous age is an Inocerumus or Aucella, the great 
bulk ot the secondary fossils (Atninomtes) being regarded as of uppermost Oolite age. Junr . ) 
NewGutafa Annr ^ ‘he Writer to the Administrator of the Government of British 
ew Guinea. Appx. Z. to the Admimstmtor s Annual Beportfor 1890-91. Brisbane : by Authority ; 1 892. 
