l82 NATURAL HISTORY BULLETIN. 



1 6. LiRIODENDRON GIGANTEUM Lcsg, 



Cret. Fl., p. 93, PI. XXII., Fig. 2; Cret. and Tert. Fl., p. 74. 

 Lesq., Fl. Dak. Gr., U. S. Geo. Sur., Mon. XVII., p. 206, 

 PI. XXV., Fijr. i; PI. XXVI., Fig. 5; PI. XXVII., Fig i. 



A single fragment was found which appears to represent 

 this species. 



A number of complete specimens not yet determined are 

 in the collection, besides hundreds of fragments, some (mono- 

 cotyledonous), too fragmentary to permit of positive identifi- 

 cation. 



Thanks are due F. H. Knowlton. of Washington, D. C, 

 for assistance in making the determinations here recorded. 

 The locality has never been adequately w'orked by the col- 

 lector. It is hoped that future effort may result in bringing 

 to light a much larger list of these most interesting organic 

 remains. 



