McKay.—On the Heptilian Beds of New Zealand. 589 
River, we have a well-marked line of elevation, to the east and west of 
which, at intervals, outliers of the Waipara beds are to be found. For 
example, to the west, in the Valley of the Eden, and in the Lower Conway, 
and thence extending a few miles inland from the Amuri Bluff to the coast 
at the mouth of Oaro Creek. 
Though at considerable distances, the limestones and saurian beds in 
the Kaikoura Peninsula west of the anticline, and the Waipara formation 
as exposed near the source of the Hapuka River, are evidently a con- 
tinuation of this western division. 
At the Amuri Bluff only are any portions of the Waipara beds con- 
tinuous, so as to connect the eastern and western wings of the anticline. 
. On the east side none of the Waipara rocks appear south of the Conway 
River, while at the Kaikoura Peninsula the whole have been removed on the 
crown of the anticline to the underlying beds, while east of the source of the 
Hapuka River the Waipara beds are not present, the older rocks reaching 
to the sea level. They are, however, to be found on the right bank of the 
Clarence River, extending some distance south along the coast. 
To the east of this line of elevation the Waipara beds are nowhere 
observed to form a syncline (the Kaikoura Peninsula excepted), but on the 
west or inland side, this is invariably the rule. 
From the point where it crosses the Waiau, this same line of elevation 
may be traced south (a slight interruption oecurring at Cheviot Hills), and 
still dividing the younger beds, as in the north, into an east and west 
division, the easterly seldom presenting a synclinal arrangement, the 
westerly invariably doing so. 
Further west, another belt of these younger rocks, often accompanied by 
tertiary beds, may be traced from Kaikoura up the valley of the Kahautara 
River, to the Upper Conway, thence across the Whale’s Back to the Waiau 
Township, and at intervals along the borders of the Hurunui Plains, till, at 
the upper end of the Weka Pass, the two westerly divisions join. Tracing 
these south, they are found covering a considerable area in the vicinity of 
‘Heathstock, occurring as patches on the high ground dividing the south 
branch of the Waipara from the Okuku River, reported as occurring in the 
Upper Ashley, present in the Waimakariri basin west of Mount Torlesse, 
forming the coal basin west of the Big Ben Range, present in the Rakaia 
Valley near the mouth of the Acheron, crossing which at Redcliff they are 
next seen on the Smythe River, and at Clent Hills near Lake Heron. 
They are next seen in the Moorhouse Range on the north bank of the 
Rangitata, crossing which they appear in Coal Creek, and at Raincliff, west 
of Mount Four Peaks, uniting with the eastern division in the low country 
between Burke Pass and Timaru. These western divisions, in most cases, 
