54 



Art. 8.— A. Kryshtüfovich : 



some living species of tlie same genus. This and another species 

 are common in the Raritan Formation.'^ A few other species were 

 recorded by Berry in the Magothy and in the Tuscaloosa For- 

 mation of Alabama.'^ Excluding the Tertiary species, this genus 

 was recognized in Europe as Phyllites hipartltus Velen. from the 

 Cenomanian of Bohemia.'^ A leaf of similar shape but quite dif- 

 ferent nervation was described by Heer as DiplnjJlltes memhrana- 

 ceusf^ from the Patoot Beds of Greenland. 



29. Celastro2yhyllmn Yokoyaniai n. sp. 



Locality : Sea coast, of Mgach. 



Only a middle part of an 

 elliptic leaf of considerable size 

 was found, not less than 10 cm. in 

 length and 5-5J cm. in width. The 

 midrib is stout, but the most 

 characteristic feature of the leaf is 

 a fine obtuse-serrate margin and a 

 very slender homogeneous network 

 of nerves, without a clear distinction 

 of the secondary and minor veins. 

 Of the three species, C. grandi- 

 folliim,^^ C. decurrens^^ and C. iindulatumJ^ of the Dakota Group, 

 which seem allied to one another, our species is first of all quite 

 different from C. deciirrens, showing similarly serrate leaves with a 



Fig. 11. 



Celastropliyllnm Yokoyamai n. sp. 



f. 8. 



1) Beeet (1911), p. 163. 



2) Beeey (1908), p. 218, f. 3. 



3) Velenoysky (1885), p. 12, pi. VI, f. 4. 



4) Heee (1883), p. 45, pi. LX, f . 4 a. 



5) Newbeekt (1895), p. 104, pi. XXI, f. 1-4 etc. 



6) Idem, p. 100, pi. XIV, f. 8-17, sub. C. angustlfoWnn ; Berey (1911), p. 176, pi. XXII , 



7) Newbeeey (1895), p. 102, pi. XXXMII, f. 1-3. 



