No. 475] 



REVISION OF COMPTONIA 



505 



Heer's species was from the Oligocene of Spechbach in Alsatia 

 while Saporta's were both from the OHgocene of Saint Zacharie 

 in France. These three species, so called, are all from strata of 

 about the same age, and not widely removed geographically, none 

 are figured bv their authors, they are all founded on verv small 

 obtusely lobed leaves, and while they may represent one or more 

 valid species of small size, it seems more probable that thev are 

 founded upon immature leaves such as arc so common on ter- 

 minal shoots in close proximity to the tnut iii the niodcni s])ecies, 

 of one of the dominant Oligocene species. ( on/ pton/a .schrankii for 

 instance. 



I haye united them proyisionallv uiidcr Ileer s name, which has 

 priority, since if left as distinct tortus thev indicate an al)undance 

 and variety of species of Comptoma whicii is apt to be very mis- 

 leading when based upon such insufhcient evidence. 



Comptoma grandifoha linger 



ihi> >>jHtK> l^ toimdul iip{)n rather poor and indefinite remains 

 ot a gigantic leat with obsolete se{'ondary venation from the lower 

 Miocene {AIa%encian) ot Radobo) in ( roatia flu «,|)e(imen is 

 5.5 cm. wide across the more ])ericct lobes, while the larirest leaf of 

 the (\i.tini: ( ..inptonia ^^\m\l 1 ha^( Uiu abk to fin.l i. ^ win 

 ^M.h >. MM. .hNM.thx.t th( nt ,h. Kulobo, h It I iu< 



it tu.Ml ( .Mi,pt..nia> ..t iii.donl.tMl iiirhuitKit\ xu wa , , / 

 ot \\at,Nr uliuh i. M , ni u ,d. md mafh > ,na la <.t - ip- n , 

 ^huhi^.iScm muidth ( nm phu, a qutn 1 1 ; I a ihn-.-^r i i 

 tical in size and outline witli the leaves ..t the existiiiic lianhsni 



