8 PROCEEDINGS OF THE NATIONAL MUSEUM. VoL. 62. 
Order EBENALES. 
Family SAPOTACEAE. 
Genus MIMUSOPS Linnaeus. 
MIMUSOPS PRAEPARVIFOLIA, new species. 
Plate 1, fig. 10. 
Leaves elliptical in outline, about equally rounded at the apex and 
base, with full, entire margins. Texture coriaceous. Length about 
4.5 em. Maximum width about 2.75 cm. Petiole missing. Midrib 
stout and prominent. Secondaries numerous, about 10 pairs, diverg- 
ing from the midrib at wide angles, camptodrome, largely immersed 
in the leaf substance. Tertiaries obsolete by immersion. 
These leaves present obvious features allying them with the genus 
Mimusops, and represent a type that makes its appearance in the 
geological record in the lower Eocene of Southeastern North America, 
and continues down to'the present when it is represented by about 
40 species, found in the strand flora of the tropics and subtropics of 
both hemispheres. 
The present fossil species is very close to the existing Mimusops 
stebert A. DeCandolle of the Antilles, being somewhat wider and less 
elongate, but of the same general type. I have recognized this re- 
semblance in the specific name chosen for the fossil, which is based 
on the Nuttallian name parvifolia which was formerly applied to this 
existing species. 
Occurrence.—Artibonite group, Miocene (station 7544). 
Holotype.—Cat. No. 36613, U.S.N.M. 
Genus CHRYSOPHYLLUM Linnaeus. 
CHRYSOPHYLLUM CAHOBASENSIS, new species. 
Plate 1, fig. 9. 
Leaves ovate-lanceolate in outline, widest at or slightly below the 
middle, and tapering upward to the acuminate tip and downward to the 
rounded-cuneate base. Margin entire. Texture coriaceous. Length 
about 6cm. Maximum width about 2.5em. Petiole missing. Midrib 
stout, curved, prominent on the lower surface of the leaf. Second- 
aries stout, more or less immersed in the leaf substance, numerous, 
and subparallel, diverging from the midrib at wide angles, and abruptly 
camptodrome in the marginal region. Tertiaries mostly immersed in 
the leaf substance, a few transversely elongated ones are visible, as 
shown in the accompanying figure. Lower surface of the leaf covered 
with tiny dots which are interpreted as indicating pubescence in life. 
