io8 
T. G. HALLE, 
(Schwed. Südpolar-Exp. 
Addenda. 
Dictyophyllum Lindl. & HUTT. To the examples of the occurrence of the 
genus in the Southern Hemisphere mentioned on pp. lo — ii should be added Dictyo- 
phylliiin Huttonianum Crie. This name is given by Crie (1888) to a Rhætic(?) 
species from New Zealand, but it is not accompanied by any description or figures. 
Cladophlebis {Klukia?) exilis (Phill.). This species (p. 17) has already been 
recorded from one locality belonging to the area of the Gondwana Continents, viz. from 
Madagascar, by Zeiller ' (1900 <?). The species has here been referred to Clado- 
phlebis instead of to Pecopteris on the ground that it cannot be found to differ, in 
any character of importance, from other Mesozoic forms with small pecopteroid pin- 
nules which are now commonly included in the former genus. There appears to be 
a tendency to substitute Cladophlebis for Pecopteris in the Mesozoic floras, though 
this does not appear to be a good course to follow. A thorough revision of the 
delimitation of these two genera in regard to the Mesozoic forms would seem to be 
wanted. 
Coniopteris Brgn. and Sphenopteris Brgn. Some of the species referred to these 
genera correspond to the definitions of Ovopteris P0TONIÉ (1893, p. 42) and Ovo- 
pteridhim Beeirend (1908, p. 34; 1909). Both genera are stated by the respective 
authors to be applicable also to certain Mesozoic forms, some of which are mentioned 
above; but, although Ovopteris was instituted as long ago as 1893, none of the two 
genera has come to be generally used for Mesozoic species. While admitting that 
difference of geological age should not influence the classification, I have preferred 
to follow the generally adopted course. A general discussion of all the forms which 
would be influenced by this change of the classification would seem to be required 
before it should be actually undertaken. 
Coniopteris? lobata (Oldh.) has been reported, on a somewhat meagre material, 
by Raciborski (1890 rï, p. lo; pi. 3, figs. 17 — 18) from the Rhætic of Poland, under 
the name of Pecopteris lobata (Oldh. & MORR.). 
Thinnfeldia Ett. Seward has recorded Th. speciosa from the Great Oolite of 
England (1904), and Th. rhomboidalis from the Kimmeridge of Scotland (1911«'). 
This latter fact should be noted in the table on p. 94. 
