iii the other part of each leaf they remain entire. The nervation represented 
in Tig. 1 8a, enlarged, consists of a very thin primary nerve, and a few very 
fine secondary ones branching into a lax meshed network. The former nerve 
is somewhat ilexuons, and so much thinned near the apex that it is only 
visible there by the aid of a glass. It usually disappears before the apex is 
reached. 
This fossil plant is nearest to Boronia serrulata , Smith, living in 
Australia, but differs from it by the obovate leaves. In the latter character 
the fossil species approaches to Boronia crennlata , Smith, also living in 
Australia, but deviates from it by the acute apex and the toothed borders. 
According to these facts, our Boronia unites the characters of both living 
species abovenamed, and may be considered as their ancestor, notwith- 
standing their inhabiting different parts of Australia ; the first-named is 
found in New South Wales, and the second in West Australia. 
Locality and Horizon . — Tox and Partridge’s claim, between Pose 
Valley and the Red Ilill, 2 miles from Emmaville (Vegetable Creek Town- 
ship); ironstone shale from New Leads (stanniferous), under basalt. 
Baronia Hookeri, sp. nov. 
Plate XIV. Figs. 19, 19 a and b. 
Sp. Char. — B. foliis crassiusculis, impari-pinnatis, impresso-glanduloso- 
punctatis ; foliolis obovatis vel oblongis, apice obtusiusculis, margine integer- 
rimis ; nervatione brochidodroma ; nervo primario distincto recto, excurrcnte ; 
nervis secundariis angulo subrecto egredientibus, approximate, subarcuatis ; 
nervis tertiariis rectangularibus, furcatis vel simplicibus ; recticulo parce 
evoluto. 
Ohs . — The fossil here represented in Tig. 19 shows a part of a com- 
pound leaf, consisting of the terminal and one lateral leaflet, adhering to a 
small fragment of the racliis. The terminal leaflet is obovate, narrowed 
towards its base and rather obtuse at the apex. The lateral leaflet is oblong, 
and its apex is not preserved. The racliis is narrowly winged. All these 
parts, the leaflets and the racliis, are finely dotted. The dots, examined 
through a strong glass, turn out to be small, roundish oil receptacles 
(glandules), which are immersed in the thick coriaceous leaf-substance. The 
borders of the leaflets are untoothed. The nervation shows a straight, sharply 
prominent primary nerve and several bent approximate secondary ones 
