15G 
pannonica, both fossil species may be separated from each other, until future 
investigations may point out sufficient arguments for their union. The 
nearest related living species is the already mentioned Callicoma serratifolia. 
Locality. — Vegetable Creek. 
Ceratopetalum Macdoxaldi, sp. nov. 
Plate XITI, Figs. 14, 14a. 
Sp. Char. — C. foliis simplicibus, petiolatis coriaceis lanceolatis, acum- 
inatis minute argute calloseque serratis ; nervatione dictyodroma ; nervo 
primario distincto, recto, apicem versus tenui ; nervis secundariis subangulis 
70-85° orientibus, numerosis, tenuibus, valde approximate, flexuosis, ramosis ; 
nervis tertiariis abbreviatis ramosis ; rete microsynammatum formantibus. 
Ohs . — The leaves arc coriaceous, varying from broad to narrow-lanceo- 
late. Relating to the form of their ends, they narrow varyingly at base and 
gradually towards the apex. The borders are sharply toothed, the teeth being 
minute and cartilaginous. The nervation shows a straight primary nerve, 
being only prominent at base and much thinned in its course towards the 
apex. The secondary nerves, diverging at scarcely acute angles, are 
numerous, approximate, thin, and somewhat flexuous and branched near to 
their ends. Their marginal branclilets, reaching the teeth-sinus, terminate 
there, thickened like those of Ceratopetalum. The tertiary nerves, being very 
line, lose themselves in a minutely meshed network immediately after leaving 
their point of divergence. (See Pig. 14a, magnified.) 
Our species is allied to Ceratopetalum hilinicum, Ett. (Fossil Flora of 
Eilin., iii, FI. XL, figs. 2G, 30, 31), from which it deviates by its more 
approximate secondary nerves, diverging at more obtuse angles. 
Locality and Horizon. — Witherden’s Tunnel, Two-mile, near Emma- 
ville (Vegetable Creek Township), on Vegetable Creek Main Deep Lead ; 
brown carbonaceous clay, under basalt. 
Ceratopelalum Gilesii, sp. nov. 
Plate XIII, Figs. 15, 16, 16a. 
Sp. Char . — C. foliolis sessilibus vel breviter petiolatis coriaceis, lancco- 
latis subobliquis utrinque acuminatis, minute argute calloseque serratis ; 
