( 98 ) 
The family is a large one of the tropics of both hemispheres. 
In the recent monographic revision by Carl Mez (Engler, 
Pflanzenreich, Heft 9, 1902) nine hundred and thirty-three 
species are enumerated distributed among thirty-two genera 
and nine fossil genera are enumerated. Four species, all 
arborescent, enter the United States, one of them a true 
Myrsine, the others referred to the genera /cacorea (Ardisia) 
and jacquinia. They range from southern Florida through 
the West Indies, Central America, Mexico and northern 
South America. 
MyrsinE crassa Lesq. f%. 52. f. 6. 
Myrsine crassa Lesq. Fl. Dak. Group, 114. pl. 52. f. 2, 
3. 1892. 
The single leaf which I have referred to this Dakota species 
was lost after the hurried sketch which is here reproduced 
was made and the reference can therefore be only provisional 
unless additional specimens are discovered. 
The outline and venation suggest this species although it is 
a somewhat smaller leaf. Iwas at first inclined to refer it 
to Lirtodendropsis, which it greatly resembles, but in the 
absence of the apex our reference of it to this species of 
Myrstne is warranted. 
Or UNcERTAIN AFFINITIES. 
DEwALQuEA GRroenLanpica Heer (?). Pl. 57. f. 3. 
Dewalquea Groenlandica Heer, Fl. Foss. Arct. 6°: 87. 
pl. 29.f. 18, 19; pl. 42. fi 5,6; pl. gf. f. 113 7: 37> 
pl. 62. f. 5,6. Newb. Fl. Amboy Clays, 129. pl. ar. fi 
2, 3,72. 1896. MHollick, Ann. N. Y. Acad. Sci. 11: 
423. pl. 36. f. 7. 1808. 
Obscure leaf-remains of uncertain botanical affinities; in- 
cluded by Heer in the Ranunculaceae. Leaves (or leaflets) 
with very tapering base, thick midribs, and short petioles; 
apparently rather coriaceous in texture and with the venation 
entirely obliterated. They agree fairly well with the figures 
of this species as cited above. This is another species which 
