177 
angulis 50-00°, infhnis subacutioribus orientibus, flexuosis arcuatis, ramosis ; 
nervis tertiariis angulis subrectis exeuntibus, subtilibus, flexuosis ramosis, 
dictyodromis ; rete euerrimo valcle evoluto. 
Obs. — The leaves represented in Pigs. 27 and 28 doubtlessly belong to 
the Leguminoseae. They are lanceolate, coriaceous, and oblique leaflets, and 
petiolate at base, acuminate and somewhat protruded at apex, and entire 
at margin. The petiolule is 0 millimeters long, and being somewhat thickened 
exhibits fine transverse wrinkles, like those of many Leguminoseae which 
possess larger leaflets. The nervation, well preserved on the specimen Pig. 
27, and represented in Pig. 28 a, enlarged, shows a pretty strong and 
prominent primary nerve, and fine flexuous secondary ones, slightly curved 
towards the borders. Their angles of divergence are more acute near the 
base of the leaflet than in its other parts. The loops are rather approximate 
to the borders. The tertiary nerves being very tender, are short, flexuous, 
and ramous. Their angles of divergence are hardly acute. The tertiary net- 
work consisting of irregularly, edged meshes, encloses a very fine and minutely 
meshed quarternary one. 
Respecting texture, shape, and some characters of nervation, the above- 
described leaflets arc very similar to those of Castanospermum australe, Vent. 
Yet the leaflets of the latter species living in Australia deviate from the 
fossil ones by the following characters : — The base is roundly obtuse, not 
narrowed ; the petiolule is shorter ; the secondary nerves diverge near the 
base of the leaflets at more obtuse angles than in its other parts ; their loops 
arc more distant from the borders, and bear some rows of meshes on their 
outer side ; finally the tertiary nerves proceed predominantly at acute angles, 
and are almost transversely anastomosing. Regarding these important 
marks of difference no reasonable conjecture can be offered as to the generic 
affinity of our fossils and Castanospermum australe. Besides, it ought to be 
taken into consideration that the above-described fossil agrees better with 
Cassia than Castanospermum , except the Australian species of the former. 
Relating to comparison of the just mentioned fossil to similar ones of the 
hitherto known fossil floras, Cassia, particularly C. phaseolites, P ng., of the 
European Tertiary Plora, have likewise been recognised as most approaching 
our fossil species. 
Localitij and Horizon. — With the preceding species ; and Withcrden’s 
Tunnel, Two-mile, near Emmaville (Vegetable Creek Township), on Vegetable 
Creek Main Beep Lead. 
11a 67— SS 2 E 
