Z AET. 9. II. YABE : 



as follows: ''The plants found in the slate which Gottsche referred 

 to the Carboniferous, on account of the occurrence of his supposed 

 Neuropterls in it, though not yet studied in detail, so far as my 

 opinion is concerned, are probably of a Triassic age ". 



The fossil locality of Mun-gyong was visited by Prof. Koto 

 in 1900. Among the plant fossils collected by him at the place 

 nnd kindly put at my disposal, there are a few, mostly fragment- 

 ary, impressions of a fern of a particular type, which has very 

 characteristic outline and venation. At first glance, the leaves 

 appears to be those of some broad-leaved plant with dentate 

 margin, though a careful examination dispels this view. This 

 attracted my special attention, and during a subsequent trip in 

 the southern part of the peninsula, I visited the locality once 

 more in order to secure, if possible, some additional specimens 

 of this remarkable form. Though fairly successful, none of my 

 examples are better than those previously collected by Prof. 

 Koto. The present paper is intended to treat this plant in 

 particular. 



Mun-gyong is a wretched town on the southern side of Tyo- 

 ryong,^^ which is a famous pass over the boundary of northern 

 Kyong-syang-do and Chhyung-ehhyong-do, and through which 

 runs one of the main roads leading from Seoul to Fusan. The 

 main road which I followed from Mun-gyong southwards, runs 

 down a more or less wide valley trending north and south for 

 the first five miles. At first, it runs along the stream, but finally 

 rises gradually to a low hill, which it descends again abruptly 

 with a very steep slope to the left bank of the stream. On the 

 top of the hill, there is a ruined stone-wall and gate facing- 

 southward. There the stream, after suddenly making a sharp 



