Kirn.—On the Lake District of the North Island. 335 
mosses and lichens, in which the epiphytic Chiloglottis traversii attains its — 
northern limit in company with the common Thelymitra longifolia and Ortho- 
ceras solandri. Raoulia monroi attains here its northern limit, and forms 
small patches on the bare surface, but of so inconspicuous a character that it 
might easily be overlooked but for the white silky hairs displayed by the 
recurved margins of the leaves. Olearia furfuracea and Corokia buddleoides 
have not, I believe, been recorded from a more southern locality, or a greater 
altitude. Dracophyllum longifolium occurs sparingly, and attains its northern 
limit; it has not previously been recorded as occurring in the North 
Island. Panaw colensoi is the most prominent shrub, forming handsome 
dwarf bushes, widely different from the small tree-like habit it assumes at its 
northern limit on the Cape Colville ranges. It affords a welcome shelter to 
Hymenophyllum bivalve, H. multifidum, and a few other ferns more or less 
common; the total number of species collected above 3,000 feet did not 
exceed seventy, but owing to the approach of night I was able to examine 
a small portion of the central range only. Still, making every allowance, 
the vegetation of the mountain comprises a remarkably limited number of 
species. 
WAIHOREPA. 
The Waihorepa valley, about two miles from Kaitiriria, appears to have 
been the bed of an ancient lake, and is remarkable for the singular fissures 
and holes which break its surface, and have probably been caused by earth- 
quakes. The most striking of these fissures extends for more than half a 
mile, although much interrupted, and in the deepest places affords a favourable 
habitat for several plants of a southern type. Clematis colensoi, Cyathodes 
empetrifolia, and Lomaria alpina, probably attain their northern habitat in 
this singular locality. Craspedia fimbriata grows to a large size, and the 
charming terrestrial orchid Corysanthes rotundifolia is found sparingly. The 
luxuriant vegetation of the fissures contrasted forcibly with the dried grasses 
and stunted shrubs which marked the level of the plain, where the only plants 
worth notice are Dracophyllum subulatum and Poa australis, var. levis, with 
tufts of Celmisia longifolia, which is known all through the district as 
«“ cotton-grass.” 
OTUMAKOKORI. 
At the foot of the Pacora range several tropical ferns exhibit the greatest 
vigour and luxuriance in an atmosphere of heated steam on the banks of the 
. Otumakokori—the boiling river. Near the source of this remarkable stream 
are a number of boiling springs, some of which have their origin in cavern-like 
recesses, others in holes eight to fifteen feet in depth, boiling wells in fact, 
but most of them sufficiently large to allow of their investigation by anyone 
