Trans. X.Z. Inst., Vol. XLIX. 



Plate XXV. 



Fig. 1. — Lyttelton Harbour, from near Cass's Peak, showing Quail Island and stream- 

 eroded valleys on the interior of the caldera. 



Fig. 2. — Lyttelton Harbour from summit of Mount Herbert, showing drowned-valley 

 topography of upper portion of the harbour and part of the long spur reach- 

 ing down from Mount Herbert. 



Face p. 368 A 



