179 
V.-TONKIN. 
To conclude I sliall shortly mention tlic peculiar relations of the fossil 
flora of the coal deposits in Tonkin. They have been described by Mr. It. 
Zeiller in several notes.* The great interest of this flora lies in the circum- 
stance that apparently in the same beds there were found fossil plants of 
acknowledged Hhsetic age (according to the European standard of geological 
sequence), together with such as are found in the various portions of the 
Gondwana System in India, and also in Australia and South Africa. The 
fossil plants came especially from two coal basins, viz., IXon-Gac (Ilone Gay) 
and Ke Bao, which are separated by a ridge of Carboniferous limestone, upon 
which the strata of the coal basin are discordantly deposited. The fossils 
were : — 
( a ) Erom the Ke-Bao Basin, Tonkin — 
Tceniopteris spathulata , M £ Clell. ( Angiopteridium , Seliimp.), and 
var. multinervis, Old. and Morr. Also found in the Upper 
Gondwanas, India. 
Balceomttaria Kurzi , Eeistm. Also found in the Middle Gondwana 
(Itaniganj Group), India. 
Dictyophyllum Nilssoni, Schenk. A If luetic species of Bavaria and 
Sweden. 
Clathropteris platypliylla, Bgt. If luetic, in Europe. 
Glossopteris Browniana, Bgt. Also in the Middle and Lower 
Gondwanas (especially Damuda Series) of India; Upper and 
Lower Coal Measures of Australia, &c. 
JP ierozamites Munsteri, Schimp. 11 luetic, Bavaria. 
Nilssonia polymorphic, Schenk. Erequent in llhsetic Beds, in Europe. 
Noggerathiopsis Hislopi, Eeistm, In the Middle and Lower Gond- 
wana, in India ; also in Tasmania. 
(b) Erom the Hon-Gac (Hone Gay) Coal Basin, Tonkin — 
Bhyllotheca indica, Bomb, Middle Gondwana, India. 
Asplenites Rcesserti, Presl. Ithsetic, in Europe. 
Tceniopteris (Angiopteridium) spathulata, M‘Clell., and also var. 
multinerms, Oldh. and Morr. Upper Gondwana, in India. 
Tivniopteris (. 'Angiopteridium ) ensis, Oldh. and Morr. Upper Gond- 
wana, in India. 
* “Sur la more fossile cles Ckarbons du Tong-King.” Compt. Rend. Acad. Sciences, 24 Juillet-, 1882 — - 
“Examen de la Flore fossile des Couches cle Cliarbon du Tong-King.” Ann. d. Mines, Sept.-Oet., 1882, PI. 
X-XII ; Bull. Soc. Q-eol. France, 3d ser., t. XIV, Avril, 188G, ct Juin, 1886. 
