No. 442.] PLAXTS FROM MATAU'AX /■'(> 



greatest width 10.5 mm. ; veins .75 mm. apai 

 nearly straight ; apex broadly truncate, 

 fragmentary winged seeds together with lea' 

 lying Raritan clays at South Amboy, N. J. 

 leaf fragments and a single seed' (Fig. 



remains referable to this genus have hithertc 

 Matawan formation. The specimen is unacc 

 although poorly characterized remains of the 

 the same formation. I have been unable tc 

 any described species, none of which are n 

 the same may be said of the existing species 

 been compared. In outline it is approach— 



to the seeds of Cedrus deodara Loud. 



In the living gymnospermous Flora Pinus 

 with about seventy species widely distribut 

 northern hemisphere, thirty-nine of these oc 

 limits of the United States. The fossil sp< 

 numerous (though many are of uncertain u 

 the older Mesozoic upward. The genus 

 developed in the later Cretaceous ai 

 Arctic regions, Greenland furnishing 

 Eocene (?) species and Spitzbergen four Cre 

 Eocene (?) species, some of them widespread ; 



Florissant, Colorado, occurring in the Baltic ' 

 land, Grinnell Land and Spitzbergen. Finns 

 likewise cosmopolitan, occurring in the Ceno 

 Silesia, and Bohemia, in Spitzbergen, in the 

 Kansas, and in the Montana formation of 

 (Cyclopitus) nordenskioldi Heer ranges from 

 Norway and Spitzbergen to the Kootanie c 



