G8 
as this genus occurs even in the Tertiary PI ora of Europe, I believe the 
Eucalyptus-Wke leaf remains found amongst the plant fossils from Dalton 
may for the present be set down as in all probability a representative of 
Eucalyptus. A more detailed comparison of the species with hitherto- 
described fossil species of Eucalyptus can only be undertaken when more 
perfect material lias been obtained. 
I named this species after the Dutchman, Van Delft, who in the 
eighteenth century made important exploring journeys in Australia. 
Locality and Horizon . — With the preceding species. 
LAE I LION A CEuE. 
Dalbergia Diemenii, sp. nov. 
Plate VI, Fig. 16. 
Sp. Char. — D. foliolis subcoriaceis, sessilibus, ovato-ellipticis, basi 
inaoquilateris, apicc obtusis, margine integerrimis ; nervatione camptodroma ; 
nervo primario distincto, recto excurrente ; nervis secundariis tenuissimis, 
subangulis 5CM30° orientibus, simplicibus, leviter curvatis ; nervis tertiariis 
inconspicuis. 
Obs. — This leaflet shows much similarity to that of Dalbergia 
primeeva , Ung., but differs in the somewhat thinner texture, which in the 
species named is designated as coriaceous. In the other characters, as far as 
they are present, there is perfect correspondence ; but a detailed comparison 
must be deferred until more complete specimens are obtained. In the mean- 
time, I place the leaf fossil under Dalbergia as a peculiar species, which I 
name after the Dutchman, Van Dieman, one of the most meritorious promoters 
of Australian geographical science in the seventeenth century. In the 
American Tertiary Flora the D. Lesquereuxii , Ett.,* may be regarded as an 
analogous species. 
Locality and Horizon . — Dalton, near Gunning ; in hard siliceous grit 
reposing on Silurian rocks. 
* Dalbergia Lesquereuxii, sp. nov. (Vaccinium reticulatum, Lesq., loc. cit., PI. LIX, fig. 6). 
Obs. — The leaves of Vaccinium reticulatum, A. Braun, from the Tertiary Flora of Switzerland, with which 
Lesquereux compares the leaf figured in the work above quoted, have an obtuse apex, a stronger midrib, and a 
prominent reticulation. The leaf quoted from the tertiary strata of Florissant, however, is acuminate, has a 
midrib which is thin even at the base, very fine secondary veins, and no prominent reticulation. At all events, 
it belongs to another plant. The somewhat unequal development of the sides of its leaf is suggestive of a leaflet 
which appears to agree best with those of Dalbergia primaiva, Ung. But as this latter is more acuminate and 
has a moie obtuse base, the leaf fossil referred to should be regarded as the remains of a peculiar species whose 
nearest ally is the D. primeeva. 
