Fog 
The Species of the Genus Larix. 41 
section of the gulf between Kamtschatka and the mainland. 
It extends further to the small islands along the coast, passes 
over to Sachalin and to the most southerly of the Kurile 
Islands, viz., Shikotan and Etorofu. On the north-east, it 
reaches its extreme limit near the Anadyr River, which, 
however, it only follows for a short distance south of lat. 
65° N., never overstepping lat. 65° N. and long. 172° E. 
Finally to its area of distribution must be added the isolated 
occurrence in the interior of Kamtschatka. 
The limit for its occurrence on the north-east towards 
the Sea of Ochot, as well as the northern boundary, is 
given on our map in accordance with MIDDENDORFF'S 
detailed accounts (1. c. pp. 530—535). The occurrence in 
Kamtschatka is reproduced from the map of HULTÉN (Kgl. 
Sv. Vet. Handl. V, No. 1, p.284), and Komarov (Acad. Sci. 
Phil. Foederat. Soviet Social., 1927, p. 101), and with regard 
to the localities on Sachalin and the southern Kurile Is- 
lands, several detailed notes exist, the most exhaustive of 
which has been supplied by MıppEnporFrF (1867), Fr. 
Scumipt (1868), Mayr (1890), and MıyaBE & Kuno (1920). 
Within this extensive area of distribution, between .lat. 
43° N. and lat. 72'/2° N., and between long. 85° and 172°E., 
the species undergoes considerable variations in habit. It 
is found in every possible form, from low, stunted speci- 
mens in the most northerly localities, to shapely trees in 
the southern vallies 80 to 100 feet high. MIDDENDORFF, who 
has given the, hitherto, most detailed description of this 
species on the basis of his own observations, has supplied 
several sketches of types varying from the fine, single- 
trunked tree near the Aldan River at lat. 61'/:° N., to the 
century-and-a-half old stunted, zig-zag bent specimens from 
the River Novaja at lat. 72'/2° N. (Fig. 12). 
